Article History
Received: 30 June 2017
Accepted: 24 January 2018
First Online: 27 February 2018
Ethics approval and consent to participate
: The study has been approved by the Ethical Committee of the department of Psychology of the University of Groningen, the Netherlands (no. PPO008093), registered 3 June 2009.All legal representatives of the residents were informed of the goal and procedure of the study and signed an informed consent prior to the study. The residents were invited to agree before each measurement. No measurements were conducted by resistance of any kind of the resident.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.