Funding for this research was provided by:
Dutch Foundation for Bipolar Disorders (-)
Received: 3 September 2019
Accepted: 4 May 2020
First Online: 1 September 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the VU University Medical Center, Amsterdam, the Netherlands. All study participants provided written consent to participate after given full information about the study.
: Not applicable.
: The authors declare that they have no competing interests.