[1] Univ Marburg, Dept Dermatol, Marburg, Germany
[2] Santemed Gesundheitszentren AG, Medbase Frauenfeld, Frauenfeld, Switzerland
[3] Univ Sydney, Melanoma Inst Australia, Sydney, NSW, Australia
[4] Imam Abdulrahman Bin Faisal Univ, IRMC, Dammam, Saudi Arabia
[5] Univ Nottingham, Ctr Evidence Based Dermatol, Lenton Lane, Nottingham NG7 2NR, England