Homan, Jens
Boerboom, Abel
Aarts, Edo
Dogan, Kemal
van Laarhoven, Cees
Janssen, Ignace
Berends, Frits
Article History
First Online: 2 August 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was reviewed and approved by the Central Medical Committee for Research in humans in Nijmegen, the Netherlands (CMO). The study was registered at the clinical trials registry of ExternalRef removed (NCT 01686997). This study was in accordance with the Declaration of Helsinki (originally adopted in 1964, with the last amendment before this trial in October 2008).