Bibliografisk note

Funding Information:
Conflicts of interest: Ha. Meteran reports receiving honoraria for lectures and advisory board meetings from GlaxoSmithKline, Teva, Novartis, Sanofi-Aventis, Airsonett AB, and ALK-Abelló not related to this study within the past 5 years. Ho. Meteran has received a research grant from ALK-Abelló A/S outside this study. Outside the study, S. F. Thomsen has been a speaker and/or advisor for Sanofi , AbbVie , LEO Pharma, Pfizer , Eli Lilly, Novartis , UCB Pharma , Almirall, Union Therapeutics, and Janssen Pharmaceuticals and has received research support from Sanofi , AbbVie , LEO Pharma, Novartis , UCB Pharma , and Janssen Pharmaceuticals . The rest of the authors declare that they have no relevant conflicts of interest.