Competing interests
Josbert Metselaar declares a honorarium from Enceladus Pharmaceuticals; Amelie Boquoi has received speaker honoraria by BMS, AbbVie and Janssen, travel support by Takeda, and has served on advisory boards for GSK, Sanofi, Janssen, Takeda, Amgen, and BMS; Susanne Isfort has received consultant honoraria from Novartis, Pfizer, Incyte and travel support from Pfizer, Novartis, Hexal, Roche, Alexion, Mundipharma; Martina Crysandt has received speaker and consultant honoraria from Astra Zeneca, Novartis and travel support from Pfizer.