The study was financed by a grant from the Netherlands Organization for Scientific Research ZonMw (80-83600-98-3054). ZonMw is a governmental institution financing research to improve healthcare in the Netherlands. Conflicts of interest M.H.E.J. reports grants from the Dutch Organization for Scientific Research ZonMw (80-83600-98-3054), during the conduct of the study, and nonfinancial support from Galderma, outside the submitted work. J.P.H.M.K. reports nonfinancial support from Galderma, outside the submitted work. P.J.N. reports grants from the Dutch Organization for Scientific Research ZonMw (80-83600-98-3054), during the conduct of the study. N.W.J.K.-S. reports nonfinancial support from Galderma and from LEO Pharma, outside the submitted work. K.M. reports grants from the Dutch Organization for Scientific Research ZonMw (80-83600-98-3054), during the conduct of the study, and nonfinancial support from Meda, outside the submitted work. B.A.B.E. reports grants from the Dutch Organization for Scientific Research ZonMw (80-83600-98-3054), during the conduct of the study.