Funding for this research was provided by:
Received: 1 May 2020
Accepted: 29 September 2020
First Online: 14 October 2020
Ethics approval and consent to participate
: Ethical approvals were granted by the Regional Ethical Review Board in Stockholm (Dnr 2015/1479–31/2) and in Denmark, by the Regional Ethics Review Board in Hillerod (H-17004363, 24 August 2017). All Changes to the protocol are sent as amendments to the respective Ethical Review Board for approval. Consent to participate is given in written form (Denmark) and electronically (Sweden, see Data Management section) from all participants after initial contact.
: Not applicable.
: CM Bulik reports: Shire (grant recipient, Scientific Advisory Board member); Idorsia (consultant) Pearson (author, royalty recipient). Other authors report no competing interests.