Tsai Hui-Shan, Niu Kuang-Yu
Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
Department of Emergency Medicine, Chang Gung Memorial Hospital Keelung Branch and Chang Gung University College of Medicine, Keelung, Taiwan
BMJ. 2022 Feb 24;376:e067996. doi: 10.1136/bmj-2021-067996.