Article History
First Online: 20 December 2018
Compliance with Ethical Standards
:
: Lex Vendrig has developed the WBI (Dutch: VAR-2) and he participates in a project to support the online application of the VAR-2 (project: VAR-2-app). Frederieke Schaafsma and Liesbeth Wijnvoord declare they have no conflicts of interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.