1 Department of Health Policy and Management, Milken Institute School of Public Health, The George Washington University, 2175 K Street NW, Suite 500, Washington, DC, 20037, USA. jzur@gwu.edu.
2 Department of Health Policy and Management, Milken Institute School of Public Health, The George Washington University, 2175 K Street NW, Suite 500, Washington, DC, 20037, USA.