Int J Nurs Stud 2020 Apr 26;104:103512. Epub 2019 Dec 26.
Family Medicine and Primary Care, Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road Level 18, Singapore 308232, Singapore; Department of Primary Care and Public Health, School of Public Health, Imperial College London, The Reynolds Building, St Dunstan's Road, London W6 8RP, UK. Electronic address: