Competing Interests: Conflict of interest: C. Bahrs is a member of the scientific advisory board of GSK, reports personal fees from Pfizer for lectures, and has received support for attending meetings and travel, all outside the submitted work. Conflict of interest: M. Kesselmeier declares no conflict of interest. Conflict of interests: M. Kolditz reports personal fees from Berlin Chemie, Boehringer, AstraZeneca, Biotest, Novartis, GSK, Gilead, Pfizer and MSD, and a research grant from Pfizer, outside the submitted work. Conflict of interest: S. Ewig is member of the scientific advisory board of Pfizer. Conflict of interest: G. Rohde reports personal fees from AstraZeneca, Berlin Chemie, BMS, Pfizer, Boehringer Ingelheim, Solvay, Insmed, GSK, Essex Pharma, MSD, Grifols, Chiesi, Vertex, Roche, Takeda and Novartis for lectures including service on speakers’ bureaus and/or consultancy during advisory board meetings, and personal fees from GSK for travel accommodations/meeting expenses, outside the submitted work. Conflict of interest: As part of her activity as a member of the executive bodies, G. Barten-Neiner reports economic connections to the following diagnostic and pharmaceutical companies: ThermoFisher Scientific/BRAHMS, Alere Technologies GmbH, Merck Sharp & Dohme Corp., Pfizer Pharma GmbH, R-Biopharm AG and Helmut Hund GmbH. Conflict of interest: J. Rupp has nothing to disclose. Conflict of interest: M. Witzenrath received personal fees from AstraZeneca, Bayer Health Care, Berlin Chemie, Biotest, Chiesi, Novartis and Teva, and research funding from Actelion, Bayer Health Care, Biotest and Boehringer Ingelheim, all unrelated to the current work. Conflict of interest: T. Welte is the head of clinical studies and a member of the speakers’ bureau for Pfizer, Bio Merieux and Roche Diagnostics, and is a consultant to Pfizer and MSD. Conflict of interest: M.W. Pletz is a consultant to and a member of the speakers’ bureau for Bayer, MSD, Pfizer, meduptodate, Thermofisher and Novartis, and has received research grants from Pfizer.