1. Global estimates of cancer prevalence for 27 sites in the adult population in 2008;F Bray;IntJCancer,2012
2. Engholm G FJ, Christensen N, Johannesen TB, Khan S., Køtlum JE, Milter MC, Ólafsdóttir E, Pukkala E, Storm HH (2015) NORDCAN: Cancer Incidence, Mortality, Prevalence and Survival in the Nordic Countries, Version 7.1 (09.07.2015). Association of the Nordic Cancer Registries. Danish Cancer Society. Available from http://www.ancr.nu, accessed on 16/11/2015.
3. How much melanoma is caused by sun exposure?;BK Armstrong;Melanoma Res,1993
4. Meta-analysis of risk factors for cutaneous melanoma: II. Sun exposure;S Gandini;EurJCancer,2005
5. IARC, group Ww (2008) Vitamin D and cancer. France. Volume 5 Volume 5. 1–221 p.