1. Department of Dermatology; VUmc Amsterdam; Amsterdam The Netherlands
2. Flevoziekenhuis Almere; Almere The Netherlands
3. Department of Epidemiology and Biostatistics; EMGO Institute for Health and Care Research; VUmc Amsterdam; Amsterdam The Netherlands
4. VU University Amsterdam; Amsterdam The Netherlands
5. Department of Dermatology; Erasmus Medical Center; Rotterdam The Netherlands