Gupta Reena, Davis Elizabeth, Horton Claire
Division of General Internal Medicine, San Francisco General Hospital, University of California, 1001 Potrero Ave, SFGH Box 1364, San Francisco, CA, 94110, USA,
J Gen Intern Med. 2013 Nov;28(11):1517-21. doi: 10.1007/s11606-013-2598-7. Epub 2013 Sep 17.