Cummings Janet R, Wen Hefei, Druss Benjamin G
Department of Health Policy and Management, Rollins School of Public Health, Emory University, 1518 Clifton Rd NE, Room 650, Atlanta, GA 30322, USA.
JAMA. 2013 Feb 13;309(6):553-4. doi: 10.1001/jama.2013.437.