Broens, Paul M. A.
Jonker, Jara E.
Trzpis, Monika
Funding for this research was provided by:
University of Groningen
Article History
Accepted: 4 March 2018
First Online: 21 March 2018
Compliance with ethical standards
: The study was approved by the Medical Ethical Committee of the University Medical Center Groningen. The study was performed in compliance with the Declaration of Helsinki. All participants gave their written informed consent.
: The authors declare they have no conflict of interest.