van Weel Chris, Knottnerus J André, van Schayck Onno C P
Department of Primary and Community Care, Radboud University Medical Center, Radboud Institute of Health Sciences, Nijmegen, Netherlands.
Department of Health Services Research and Policy, Australian National University, Canberra, Australia.
BMJ. 2020 Apr 8;369:m1181. doi: 10.1136/bmj.m1181.