Funding for this research was provided by:
Janssen Biotech (-)
Received: 4 June 2019
Accepted: 18 November 2019
First Online: 12 February 2020
Ethics approval and consent to participate
: This study was approved by the regional Ethical Committee in Stockholm, Sweden (ref. №s 2009/1250–31/4, 2013/541–32 and 2017/1559–32). Participant consent was not required since no data could be linked to a specific individual.
: Not applicable.
: All co-authors are associated with the Centre for Pharmacoepidemiology at Karolinska Institutet, Stockholm, Sweden, which receives grants from several entities (pharmaceutical companies, regulatory authorities, contract research organizations) for the performance of drug safety and drug utilization studies.