Funding for this research was provided by:
Received: 6 December 2019
Accepted: 17 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: This study has been approved by the Ethics Review Board of the Faculty of Social and Behavioral Sciences of the University of Amsterdam (ref nr: 2018-CDE-9258). We received written informed consent from participants before they filled out the first questionnaire.
: Not applicable.
: MB developed Supportive Parenting and works for The Netherlands Center for Preventive Youth Health (NCJ). The NCJ is responsible for the dissemination and the implementation of Supportive Parenting. The other authors declare that they have no competing interests.