1 Department of Dermatology, Erasmus MC-University Medical Center Rotterdam and Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands.
2 Department of Dermatology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands.
3 Department of Gastroenterology and Hepatology, Erasmus MC-University Medical Center Rotterdam, Rotterdam, The Netherlands.