1. Department of Dermatology; Reference Center for Cutaneous Adverse Reactions; University Medical Center Groningen; University of Groningen; Hanzeplein 1 9713 GZ Groningen the Netherlands
2. Institute of Medical Biometry and Medical Informatics; University Medical Center; Freiburg Germany
3. Department of Dermatology; Hôpital Henri Mondor; Université Paris-Est Créteil; Créteil France
4. Department of Dermatology; Dokumentationszentrum schwerer Hautreaktionen (dZh); University Medical Center; Freiburg Germany
5. Department of Dermatology; National Taiwan University Hospital and National Taiwan University College of Medicine; Taipei Taiwan
6. Department of Dermatology; Kings College Hospital; London U.K
7. Department of Dermatology; Medical University of Innsbruck; Innsbruck Austria
8. Department of Dermatology; GISED study center; Ospedali Riuniti di Bergamo; Bergamo Italy