Ethics statement
CMO
MAY
The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008. All procedures involving human subjects were approved by the local medical ethical committee, CMO Arnhem-Nijmegen, approval number 2016–2346, on May 18, 2016. All participants gave written informed consent before taking part.