[1] Maastricht Univ, Dept Dermatol, Med Ctr, P Debyelaan 25,POB 5800, NL-6202 AZ Maastricht, Netherlands
[2] Maastricht Univ, GROW Res Inst Oncol & Dev Biol, Maastricht, Netherlands
[3] Catharina Hosp, Dept Dermatol, Eindhoven, Netherlands
[4] Parkweg Clin Sommer, Dept Dermatol, Maastricht, Netherlands
[5] Dept Clin Epidemiol & Med Technol Assessment, Maastricht, Netherlands
[6] VieCuri Med Ctr, Dept Dermatol, Venlo, Netherlands
[7] Zuyderland Med Ctr, Dept Dermatol, Heerlen, Netherlands
[8] Maastricht Univ, Dept Epidemiol, Maastricht, Netherlands