Funding for this research was provided by:
Stichting Zabawas (G2012/026)
Received: 29 March 2019
Accepted: 21 October 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: This study is being conducted in accordance with the principles of the Declaration of Helsinki and Good Clinical Practice guidelines. The study protocol is approved by the scientific committee of Heart Lung Center Leiden (October, 2015) and the medical ethics committee of the Leiden University Medical Center (May, 2015. Protocol number: P14.298). Written informed consent will is obtained from all participants. The Leiden University Medical Center has a liability insurance for all research projects.
: Not applicable.
: The authors declare that they have no competing interests.