Wong John E L, Leo Yee Sin, Tan Chorh Chuan
Department of Hematology-Medical Oncology, National University Cancer Institute, National University Health System, Singapore.
Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
JAMA. 2020 Apr 7;323(13):1243-1244. doi: 10.1001/jama.2020.2467.