Chang Bernard P, Kessler Ronald C, Pincus Harold A, Nock Matthew K
Department of Emergency Medicine, Columbia University Irving Medical Center, 622 West 168th Street, VC2-Suite #260, New York, NY 10032, USA.
Department of Health Care Policy, Harvard Medical School, Boston, MA, USA.
BMJ. 2020 Jun 29;369:m2541. doi: 10.1136/bmj.m2541.