• 1  Diffey BL. Sources and measurement of ultraviolet radiation. Methods 2002;28(1):4–13. Cross Ref link Pubmed link
  • 2  Dawe RS. Knowledge of body site variability in ultraviolet‐induced erythemal responses guides choice of site for pre‐therapy minimal erythema dose testing. J Invest Dermatol 2005;124(3):662; author reply 663. Cross Ref link Pubmed link
  • 3  Diffey BL, Jansen CT, Urbach F, Wulf HC. The standard erythema dose: a new photobiological concept. Photodermatol Photoimmunol Photomed 1997;13(1–2):64–6. Cross Ref link Pubmed link
  • 4  Webb AR, Slaper H, Koepke P, Schmalwieser AW. Know your standard: clarifying the CIE erythema action spectrum. Photochem Photobiol 2011;87(2):483–6. Cross Ref link Pubmed link
  • 5  Hooke RJ, Pearson AJ, O'Hagan JB. Temporal variation of erythemally effective UVB/UVA ratio at Chilton, UK. Radiat Prot Dosimetr 2012;149(2):185–90. Cross Ref link
  • 6  Blumthaler M, Ambach W, Ellinger R. Increase in solar UV radiation with altitude. J Photochem Photobiol B Biol 1997;39(2):130–4. Cross Ref link
  • 7  Diffey BL. Human exposure to solar ultraviolet radiation. J Cosmet Dermatol 2002;1(3):124–30. Cross Ref link Pubmed link
  • 8  Kerr AC, Ferguson J, Attili SK, et al. Ultraviolet A1 phototherapy: a British Photodermatology Group workshop report. Clin Exp Dermatol 2012;37(3):219–26. Cross Ref link Pubmed link
  • 9  Takahashi H, Nakajima S, Ogasawara K, et al. Photodynamic therapy using a novel irradiation source, LED lamp, is similarly effective to photodynamic therapy using diode laser or metal‐halide lamp on DMBA‐ and TPA‐induced mouse skin papillomas. J Dermatol 2014;41(8):729–31. Cross Ref link Pubmed link
  • 10  Young AR. Chromophores in human skin. Phys Med Biol 1997;42(5):789–802. Cross Ref link Pubmed link
  • 11  Tewari A, Sarkany RP, Young AR. UVA1 induces cyclobutane pyrimidine dimers but not 6‐4 photoproducts in human skin in vivo. J Invest Dermatol 2012;132(2):394–400. Cross Ref link Pubmed link
  • 12  Tewari A, Grage MM, Harrison GI, Sarkany R, Young AR. UVA1 is skin deep: molecular and clinical implications. Photochem Photobiol Sci 2013;12(1):95–103. Cross Ref link Pubmed link
  • 13  Woollons A, Kipp C, Young AR, et al. The 0.8% ultraviolet B content of an ultraviolet A sunlamp induces 75% of cyclobutane pyrimidine dimers in human keratinocytes in vitro. Br J Dermatol 1999;140(6):1023–30. Cross Ref link Pubmed link
  • 14  Bech‐Thomsen N, Wulf HC. A polychromatic action spectrum for photosensitivity to orally administered 8‐methoxypsoralen in humans. Clin Exp Dermatol 1994;19(1):12–15. Cross Ref link Pubmed link
  • 15  Cadet J, Mouret S, Ravanat JL, Douki T. Photoinduced damage to cellular DNA: direct and photosensitized reactions. Photochem Photobiol 2012;88(5):1048–65. Cross Ref link Pubmed link
  • 16  DiGiovanna JJ, Kraemer KH. Shining a light on xeroderma pigmentosum. J Invest Dermatol 2012;132(3 Pt 2):785–96. Cross Ref link Pubmed link
  • 17  Melis JP, van Steeg H, Luijten M. Oxidative DNA damage and nucleotide excision repair. Antioxid Redox Signal 2013;18(18):2409–19. Cross Ref link Pubmed link
  • 18  Young AR, Chadwick CA, Harrison GI, Hawk JL, Nikaido O, Potten CS. The in situ repair kinetics of epidermal thymine dimers and 6‐4 photoproducts in human skin types I and II. J Invest Dermatol 1996;106(6):1307–13. Cross Ref link Pubmed link
  • 19  Halliday GM, Cadet J. It's all about position: the basal layer of human epidermis is particularly susceptible to different types of sunlight‐induced DNA damage. J Invest Dermatol 2012;132(2):265–7. Cross Ref link Pubmed link
  • 20  Ziegler A, Jonason AS, Leffell DJ, et al. Sunburn and p53 in the onset of skin cancer. Nature 1994;372(6508):773–6. Cross Ref link Pubmed link
  • 21  Jiang, W, Ananthaswamy HN, Muller HK, Kripke ML. p53 protects against skin cancer induction by UV‐B radiation. Oncogene 1999;18(29):4247–53. Cross Ref link Pubmed link
  • 22  Burns AS, Jaros E, Cole M, Perry R, Pearson AJ, Lunec J. The molecular pathology of p53 in primitive neuroectodermal tumours of the central nervous system. Br J Cancer 2002;86(7):1117–23. Cross Ref link Pubmed link
  • 23  Rhodes LE, Gledhill K, Masoodi M, et al. The sunburn response in human skin is characterized by sequential eicosanoid profiles that may mediate its early and late phases. FASEB J 2009;23(11):3947–56. Cross Ref link Pubmed link
  • 24  Nicolaou A, Masoodi M, Gledhill K, et al. The eicosanoid response to high dose UVR exposure of individuals prone and resistant to sunburn. Photochem Photobiol Sci 2012;11(2):371–80. Cross Ref link Pubmed link
  • 25  Harrison GI, Young AR. Ultraviolet radiation‐induced erythema in human skin. Methods 2002;28(1):14–19. Cross Ref link Pubmed link
  • 26  Harrison GI, Young AR, McMahon SB. Ultraviolet radiation‐induced inflammation as a model for cutaneous hyperalgesia. J Invest Dermatol 2004;122(1):183–9. Cross Ref link Pubmed link
  • 27  Sheehan JM, Cragg N, Chadwick CA, Potten CS, Young AR. Repeated ultraviolet exposure affords the same protection against DNA photodamage and erythema in human skin types II and IV but is associated with faster DNA repair in skin type IV. J Invest Dermatol 2002;118(5):825–9. Cross Ref link Pubmed link
  • 28  Schmalwieser AW, Wallisch S, Diffey B. A library of action spectra for erythema and pigmentation. Photochem Photobiol Sci 2012;11(2):251–68. Cross Ref link Pubmed link
  • 29  Young AR, Chadwick CA, Harrison GI, Nikaido O, Ramsden J, Potten CS. The similarity of action spectra for thymine dimers in human epidermis and erythema suggests that DNA is the chromophore for erythema. J Invest Dermatol 1998;111(6):982–8. Cross Ref link Pubmed link
  • 30  Auletta M, Gange RW, Tan OT, Matzinger E. Effect of cutaneous hypoxia upon erythema and pigment responses to UVA, UVB, and PUVA (8‐MOP + UVA) in human skin. J Invest Dermatol 1986;86(6):649–52. Cross Ref link Pubmed link
  • 31  Tewari A, Lahmann C, Sarkany R, Bergemann J, Young AR. Human erythema and matrix metalloproteinase‐1 mRNA induction, in vivo, share an action spectrum which suggests common chromophores. Photochem Photobiol Sci 2012;11(1):216–23. Cross Ref link Pubmed link
  • 32  Rhodes LE, Belgi G, Parslew R, McLoughlin L, Clough GF, Friedmann PS. Ultraviolet‐B‐induced erythema is mediated by nitric oxide and prostaglandin E2 in combination. J Invest Dermatol 2001;117(4):880–5. Cross Ref link Pubmed link
  • 33  Moan J, Nielsen KP, Juzeniene A. Immediate pigment darkening: its evolutionary roles may include protection against folate photosensitization. FASEB J 2012;26(3):971–5. Cross Ref link Pubmed link
  • 34  Tadokoro T, Yamaguchi Y, Batzer J, et al. Mechanisms of skin tanning in different racial/ethnic groups in response to ultraviolet radiation. J Invest Dermatol 2005;124(6):1326–32. Cross Ref link Pubmed link
  • 35  Choi W, Miyamura Y, Wolber R, et al. Regulation of human skin pigmentation in situ by repetitive UV exposure: molecular characterization of responses to UVA and/or UVB. J Invest Dermatol 2010;130(6):1685–96. Cross Ref link Pubmed link
  • 36  Gilchrest BA, Zhai S, Eller MS, Yarosh DB, Yaar M. Treatment of human melanocytes and S91 melanoma cells with the DNA repair enzyme T4 endonuclease V enhances melanogenesis after ultraviolet irradiation. J Invest Dermatol 1993;101(5):666–72. Cross Ref link Pubmed link
  • 37  Gilchrest BA, Eller MS. DNA photodamage stimulates melanogenesis and other photoprotective responses. J Investig Dermatol Symp Proc 1999;4(1):35–40. Cross Ref link Pubmed link
  • 38  Eller MS, Ostrom K, Gilchrest BA. DNA damage enhances melanogenesis. Proc Natl Acad Sci USA 1996;93(3):1087–92. Cross Ref link Pubmed link
  • 39  Chen H, Weng QY, Fisher DE. UV signaling pathways within the skin. J Invest Dermatol 2014;134(8):2080–5. Cross Ref link Pubmed link
  • 40  Schwarz T. The dark and the sunny sides of UVR‐induced immunosuppression: photoimmunology revisited. J Invest Dermatol 2010;130(1):49–54. Cross Ref link Pubmed link
  • 41  Norval M, Halliday GM. The consequences of UV‐induced immunosuppression for human health. Photochem Photobiol 2011;87(5):965–77. Cross Ref link Pubmed link
  • 42  Gibbs NK, Norval M. Photoimmunosuppression: a brief overview. Photodermatol Photoimmunol Photomed 2013;29(2):57–64. Cross Ref link Pubmed link
  • 43  Kelly DA, Young AR, McGregor JM, Seed PT, Potten CS, Walker SL. Sensitivity to sunburn is associated with susceptibility to ultraviolet radiation‐induced suppression of cutaneous cell‐mediated immunity. J Exp Med 2000;191(3):561–6. Cross Ref link Pubmed link
  • 44  Vink AA, Yarosh DB, Kripke ML. Chromophore for UV‐induced immunosuppression: DNA. Photochem Photobiol 1996;63(4):383–6. Cross Ref link Pubmed link
  • 45  Norval M. Chromophore for UV‐induced immunosuppression: urocanic acid. Photochem Photobiol 1996;63(4):386–90. Cross Ref link Pubmed link
  • 46  Palmer RA, Friedmann PS. Ultraviolet radiation causes less immunosuppression in patients with polymorphic light eruption than in controls. J Invest Dermatol 2004;122(2):291–4. Cross Ref link Pubmed link
  • 47  van de Pas CB, Kelly DA, Seed PT, Young AR, Hawk JL, Walker SL. Ultraviolet‐radiation‐induced erythema and suppression of contact hypersensitivity responses in patients with polymorphic light eruption. J Invest Dermatol 2004;122(2):295–9. Cross Ref link Pubmed link
  • 48  Lembo S, Fallon J, O'Kelly P, Murphy GM. Polymorphic light eruption and skin cancer prevalence: is one protective against the other? Br J Dermatol 2008;159(6):1342–7. Cross Ref link Pubmed link
  • 49  Felton S, Navid F, Schwarz A, Schwarz T, Glaser R, Rhodes LE. Ultraviolet radiation‐induced upregulation of antimicrobial proteins in health and disease. Photochem Photobiol Sci 2013;12(1):29–36. Cross Ref link Pubmed link
  • 50  Lucas RM, Norval M, Neale RE, et al. The consequences for humans of stratospheric ozone depletion in association with other environmental factors. Photochem Photobiol Sci 2015;14(1):53–87. Cross Ref link Pubmed link
  • 51  Jablonski NG. The evolution of human skin colouration and its relevance to health in the modern world. J R Coll Phys Edinb 2012;42(1):58–63. Cross Ref link
  • 52  Liu D, Fernandez BO, Hamilton A, et al. UVA irradiation of human skin vasodilates arterial vasculature and lowers blood pressure independently of nitric oxide synthase. J Invest Dermatol 2014;134(7):1839–46. Cross Ref link Pubmed link
  • 53  Halliday GM, Byrne SN. An unexpected role: UVA‐induced release of nitric oxide from skin may have unexpected health benefits. J Invest Dermatol 2014;134(7):1791–4. Cross Ref link Pubmed link
  • 54  Wolnicka‐Glubisz A, Noonan FP. Neonatal susceptibility to UV induced cutaneous malignant melanoma in a mouse model. Photochem Photobiol Sci 2006;5(2):254–60. Cross Ref link Pubmed link
  • 55  de Gruijl FR, Van der Leun JC. Estimate of the wavelength dependency of ultraviolet carcinogenesis in humans and its relevance to the risk assessment of a stratospheric ozone depletion. Health Phys 1994;67(4):319–25. Cross Ref link Pubmed link
  • 56  Brash DE, Rudolph JA, Simon JA, et al. A role for sunlight in skin cancer: UV‐induced p53 mutations in squamous cell carcinoma. Proc Natl Acad Sci USA 1991;88(22):10124–8. Cross Ref link Pubmed link
  • 57  Ziegler AD, Leffell J, Kunala S, et al. Mutation hotspots due to sunlight in the p53 gene of nonmelanoma skin cancers. Proc Natl Acad Sci USA 1993;90(9):4216–20. Cross Ref link Pubmed link
  • 58  Campbell C, Quinn AG, Ro YS, Angus B, Rees JL. p53. mutations are common and early events that precede tumor invasion in squamous cell neoplasia of the skin. J Invest Dermatol 1993;100(6):746–8. Cross Ref link Pubmed link
  • 59  Dumaz N, Drougard C, Sarasin A, Daya‐Grosjean L. Specific UV‐induced mutation spectrum in the p53 gene of skin tumors from DNA‐repair‐deficient xeroderma pigmentosum patients. Proc Natl Acad Sci USA 1993;90(22):10529–33. Cross Ref link Pubmed link
  • 60  Kraemer KH. Sunlight and skin cancer: another link revealed. Proc Natl Acad Sci USA 1997;94(1):11–14. Cross Ref link Pubmed link
  • 61  Wang Y, Digiovanna JJ, Stern JB, et al. Evidence of ultraviolet type mutations in xeroderma pigmentosum melanomas. Proc Natl Acad Sci USA 2009;106(15):6279–84. Cross Ref link Pubmed link
  • 62  Runger TM. Is UV‐induced mutation formation in melanocytes different from other skin cells? Pigment Cell Melanoma Res 2011;24(1):10–12. Cross Ref link Pubmed link
  • 63  Armstrong BK, Kricker A. The epidemiology of UV induced skin cancer. J Photochem Photobiol B 2001;63(1–3):8–18. Cross Ref link Pubmed link
  • 64  Tewari A, Grys K, Kollet J, Sarkany R, Young AR. Upregulation of MMP12 and its activity by UVA1 in human skin: potential implications for photoaging. J Invest Dermatol 2014;134(10)2598–609. Cross Ref link Pubmed link
  • 65  Wang FN, Smith R, Tran BA, Kang S, Voorhees JJ, Fisher GJ. Dermal damage promoted by repeated low‐level UV‐A1 exposure despite tanning response in human skin. JAMA Dermatol 2014;150(4):401–6. Cross Ref link Pubmed link
  • 66  Lahmann C, Young AR, Wittern KP, Bergemann J. Induction of mRNA for matrix metalloproteinase 1 and tissue inhibitor of metalloproteinases 1 in human skin in vivo by solar simulated radiation. Photochem Photobiol 2001;73(6):657–63. Cross Ref link Pubmed link
  • 67  Fisher GJ, Wang ZQ, Datta SC, Varani J, Kang S, Voorhees JJ. Pathophysiology of premature skin aging induced by ultraviolet light. N Engl J Med 1997;337(20):1419–28. Cross Ref link Pubmed link
  • 68  Quan T, Qin Z, Xia W, Shao Y, Voorhees JJ, Fisher GJ. Matrix‐degrading metalloproteinases in photoaging. J Investig Dermatol Symp Proc 2009;14(1):20–4. Cross Ref link Pubmed link
  • 69  Yarosh D, Dong K, Smiles K. UV‐induced degradation of collagen I is mediated by soluble factors released from keratinocytes. Photochem Photobiol 2008;84(1):67–8. Pubmed link
  • 70  Birket MJ, Birch‐Machin MA. Ultraviolet radiation exposure accelerates the accumulation of the aging‐dependent T414G mitochondrial DNA mutation in human skin. Aging Cell 2007;6(4):557–64. Cross Ref link Pubmed link
  • 71  Krutmann J, Schroeder P. Role of mitochondria in photoaging of human skin: the defective powerhouse model. J Investig Dermatol Symp Proc 2009;14(1):44–9. Cross Ref link Pubmed link
  • 72  Tulah AS, Birch‐Machin MA. Stressed out mitochondria: the role of mitochondria in ageing and cancer focussing on strategies and opportunities in human skin. Mitochondrion 2013;13(5):444–53. Cross Ref link Pubmed link
  • 73  Berneburg M, Plettenberg H, Krutmann J. Photoaging of human skin. Photodermatol Photoimmunol Photomed 2000;16(6):239–44. Cross Ref link Pubmed link
  • 74  Kligman LH, Sayre RM. An action spectrum for ultraviolet induced elastosis in hairless mice: quantification of elastosis by image analysis. Photochem Photobiol 1991;53(2):237–42. Cross Ref link Pubmed link
  • 75  Bissett DL, Hannon DP, Orr TV. Wavelength dependence of histological, physical, and visible changes in chronically UV‐irradiated hairless mouse skin. Photochem Photobiol 1989;50(6):763–9. Cross Ref link Pubmed link
  • 76  Starcher B, O'Neal P, Granstein RD, Beissert S. Inhibition of neutrophil elastase suppresses the development of skin tumors in hairless mice. J Invest Dermatol 1996;107(2):159–63. Cross Ref link Pubmed link
  • 77  Starcher B, Conrad M. A role for neutrophil elastase in solar elastosis. Ciba Found Symp 1995;192:338–46; discussion 346–37. Pubmed link
  • 78  Sheehan JM, Potten CS, Young AR. Tanning in human skin types II and III offers modest photoprotection against erythema. Photochem Photobiol 1998;68(4):588–92. Cross Ref link Pubmed link
  • 79  Jansen R, Osterwalder U, Wang SQ, Burnett M, Lim HW. Photoprotection: part II. Sunscreen: development, efficacy, and controversies. J Am Acad Dermatol 2013;69(6):867:e1–14; Cross Ref link
  • 80  Fourtanier A, Moyal D, Seite S. UVA filters in sun‐protection products: regulatory and biological aspects. Photochem Photobiol Sci 2012;11(1):81–9. Cross Ref link Pubmed link
  • 81  Petersen B, Datta P, Philipsen PA, Wulf HC. Sunscreen use and failures – on site observations on a sun‐holiday. Photochem Photobiol Sci 2013;12(1):190–6. Cross Ref link Pubmed link
  • 82  Petersen B, Wulf HC. Application of sunscreen – theory and reality. Photodermatol Photoimmunol Photomed 2014;30(2–3):96–101. Cross Ref link Pubmed link
  • 83  Thompson SC, Jolley D, Marks R. Reduction of solar keratoses by regular sunscreen use. N Engl J Med 1993;329(16):1147–51. Cross Ref link Pubmed link
  • 84  Naylor MF, Boyd A, Smith DW, Cameron GS, Hubbard D, Neldner KH. High sun protection factor sunscreens in the suppression of actinic neoplasia. Arch Dermatol 1995;131(2):170–5. Cross Ref link Pubmed link
  • 85  van der Pols JC, Williams GM, Pandeya N, Logan V, Green AC. Prolonged prevention of squamous cell carcinoma of the skin by regular sunscreen use. Cancer Epidemiol Biomarkers Prev 2006;15(12):2546–8. Cross Ref link Pubmed link
  • 86  Huncharek M, Kupelnick B. Use of topical sunscreens and the risk of malignant melanoma: a meta‐analysis of 9067 patients from 11 case–control studies. Am J Public Health 2002;92(7):1173–7. Cross Ref link Pubmed link
  • 87  Gorham ED, Mohr SB, Garland CF, Chaplin G, Garland FC.Do sunscreens increase risk of melanoma in populations residing at higher latitudes? Ann Epidemiol 2007;17(12):956–63. Cross Ref link Pubmed link
  • 88  Green AC, Williams GM, Logan V, Strutton GM. Reduced melanoma after regular sunscreen use: randomized trial follow‐up. J Clin Oncol 2011;29(3):257–63. Cross Ref link Pubmed link
  • 89  Hughes MC, Williams GM, Baker P, Green AC. Sunscreen and prevention of skin aging: a randomized trial. Ann Intern Med 2013;158(11):781–90. Cross Ref link Pubmed link
  • 90  Norval M, Wulf HC. Does chronic sunscreen use reduce vitamin D production to insufficient levels? Br J Dermatol 2009;161(4):732–6. Cross Ref link Pubmed link
  • 91  Springbett P, Buglass S, Young AR. Photoprotection and vitamin D status. J Photochem Photobiol B 2010;101(2):160–8. Cross Ref link Pubmed link
  • 92  Sayre RM, Dowdy JC. Darkness at noon: sunscreens and vitamin D3. Photochem Photobiol 2007;83(2):459–63. Cross Ref link Pubmed link
  • 93  Gambichler T, Laperre J, Hoffmann K. The European standard for sun‐protective clothing: EN 13758. J Eur Acad Dermatol Venereol 2006;20(2):125–30. Cross Ref link Pubmed link
  • 94  Bassil D, Rahme M, Hoteit M, Fuleihan H. Gel hypovitaminosis D in the Middle East and North Africa: Prevalence, risk factors and impact on outcomes. Dermatoendocrinology 2013;5(2):274–98. Cross Ref link
  • 95  Diffey BL, Diffey JL. Sun protection with trees. Br J Dermatol 2002;147(2):397–9. Cross Ref link Pubmed link
  • 96  Petersen B, Thieden E, Philipsen PA, Heydenreich J, Wulf HC, Young AR. Determinants of personal ultraviolet‐radiation exposure doses on a sun holiday. Br J Dermatol 2013;168(5):1073–9. Cross Ref link Pubmed link
  • 97  Weihs P, Schmalwieser A, Reinisch C, Meraner E, Walisch S, Harald M. Measurements of personal UV exposure on different parts of the body during various activities. Photochem Photobiol 2013;89(4):1004–7. Cross Ref link Pubmed link
  • 98  Thieden E, Philipsen PA, Heydenreich J, Wulf HC. UV radiation exposure related to age, sex, occupation, and sun behavior based on time‐stamped personal dosimeter readings. Arch Dermatol 2004;140(2):197–203. Cross Ref link Pubmed link
  • 99  Diffey B. A behavioral model for estimating population exposure to solar ultraviolet radiation. Photochem Photobiol 2008;84(2):371–5. Cross Ref link Pubmed link
  • 100  Parisi AV, Meldrum LR, Kimlin MG, Wong JC, Aitken J, Mainstone JS. Evaluation of differences in ultraviolet exposure during weekend and weekday activities. Phys Med Biol 2000;45(8):2253–62. Cross Ref link Pubmed link
  • 101  Godar DE, Wengraitis SP, Shreffler J, Sliney DH. UV doses of Americans. Photochem Photobiol 2001;73(6):621–9. Cross Ref link Pubmed link
  • 102  Diffey BL, Gies HP. The confounding influence of sun exposure in melanoma. Lancet 1998;351(9109):1101–2. Cross Ref link Pubmed link
  • 103  Bataille V, Boniol M, De Vries E, et al. A multicentre epidemiological study on sunbed use and cutaneous melanoma in Europe. Eur J Cancer 2005;41(14):2141–9. Cross Ref link Pubmed link
  • 104  Bock C, Diehl K, Litaker D, Breitbart EW, Greinert R, Schneider S. Sunbed use in Germany: trends, user histories and factors associated with cessation and readiness to change. Br J Dermatol 2013;169(2):441–9. Cross Ref link Pubmed link
  • 105  Oliver H, Ferguson J, Moseley H. Quantitative risk assessment of sunbeds: impact of new high power lamps. Br J Dermatol 2007;157(2):350–6. Cross Ref link Pubmed link
  • 106  Boniol M, Autier P, Boyle P, Gandini S. Cutaneous melanoma attributable to sunbed use: systematic review and meta‐analysis. BMJ 2012;345:e4757. Cross Ref link Pubmed link
  • 107  Tierney P, Ferguson J, Ibbotson S, Dawe R, Eadie E, Moseley H. Nine out of 10 sunbeds in England emit ultraviolet radiation levels that exceed current safety limits. Br J Dermatol 2013;168(3):602–8. Cross Ref link Pubmed link
  • 108  Petersen B, Wulf HC, Triguero‐Mas M, et al. Sun and ski holidays improve vitamin D status, but are associated with high levels of DNA damage. J Invest Dermatol 2014;134(11):2806–13. Cross Ref link Pubmed link
  • 109  Grant WB, Cross HS, Garland CF, et al. Estimated benefit of increased vitamin D status in reducing the economic burden of disease in western Europe. Prog Biophys Mol Biol 2009;99(2–3):104–13. Cross Ref link Pubmed link
  • 110  Herschenfeld RE, Gilchrest BA. The cumulative effects of ultraviolet radiation on skin: photoageing. In: Hawk JLM, ed. Photodermatology. London: Arnold, 1999.