Hsia Renee Y, Hale Zachariah, Tabas Jeffrey A
Department of Emergency Medicine University of California, San Francisco2 Philip R. Lee Institute for Health Policy Studies, University of California, San Francisco.
School of Medicine, University of California, San Francisco.
JAMA Intern Med. 2016 Jul 1;176(7):1029-32. doi: 10.1001/jamainternmed.2016.2498.