1. From the Departments of Dermatology (M.H.E.J., J.P.H.M.K., N.K., A.H.M.M.A., P.M.S., N.W.J.K.-S., K.M.) and Clinical Epidemiology and Medical Technology Assessment (B.A.B.E.), Maastricht University Medical Center, and the GROW School for Oncology and Developmental Biology (M.H.E.J., J.P.H.M.K., A.H.M.M.A., P.M.S., N.W.J.K.-S., K.M.) and the Department of Epidemiology (P.J.N.), Maastricht University, Maastricht, the Department of Dermatology, Zuyderland Medical Center, Heerlen (J.P.H.M.K., P.J.F.Q.), the...