[1] MedStar Hlth Inst Qual & Safety, 10980 Grantchester Way, Columbia, MD 21044 USA
[2] MedStar Hlth Diabet & Res Inst, 100 Irving St NW,EB 4114, Washington, DC 20010 USA
[3] MedStar Washington Hosp Ctr, Dept Med, 110 Irving St NW, Washington, DC 20010 USA
[4] Georgetown Univ, Dept Med, Sch Med, 3900 Reservoir Rd NW, Washington, DC 20007 USA