Funding for this research was provided by:
Goldschmeding Foundation (-)
Article History
Received: 4 June 2019
Accepted: 3 December 2019
First Online: 20 December 2019
Compliance with Ethical Standards
:
: Martijn Burger and Emma Pleeging received financial support from the Goldschmeding Foundation for People, Work and Economy (project ‘Hope as an Incentive’). Job van Exel declares that he has no conflict of interest.