Venekamp Roderick P, Schilder Anne G M, van den Heuvel Maaike, Hay Alastair D
Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.
National Institute of Health Research, University College London Hospitals Biomedical Research Centre, London, UK.
BMJ. 2020 Nov 18;371:m4238. doi: 10.1136/bmj.m4238.