Terluin, Berend http://orcid.org/0000-0002-8944-5238
Brouwers, Evelien P. M.
Marchand, Miquelle A. G.
de Vet, Henrica C. W.
Article History
Accepted: 15 February 2018
First Online: 21 February 2018
Compliance with ethical standards
:
: BT is the copyright owner of the 4DSQ and receives copyright fees from companies that use the 4DSQ on a commercial basis (the 4DSQ is freely available for non-commercial use in health care and research). BT received fees from various institutions for workshops on the application of the 4DSQ in primary care settings. The other authors declare no conflicts of interests.
: For this study ethical approval was not required (Medical Ethics Review Committee of VU University Medical Center, Amsterdam, reference 2017.569).
: For this study informed consent was not required (Medical Ethics Review Committee of VU University Medical Center, Amsterdam, reference 2017.569).