Received: 10 July 2020
Accepted: 1 September 2020
First Online: 11 September 2020
Ethics approval and consent to participate
: Clinical study protocols and informed consent forms for the participation in research for patient ascertainment were approved by the local medical ethics committees of the collaborating medical centres in Belgium. Genetic study protocols and informed consent forms were approved by the ethics committees of the University Hospital of Antwerp and the University of Antwerp, Belgium.
: Not applicable.
: MT reports personal fees (current employment) from Janssen Research & Development, a Division of Janssen Pharmaceutica NV, Beerse, Belgium, and owns stock/stock options in the company.