[1] Medstar Washington Hosp Ctr, Washington, DC USA
[2] Univ Colorado Anschutz, Aurora, CO USA
[3] Medstar Georgetown Washington Hosp Ctr, Washington, DC USA
[4] Georgetown Univ, Sch Med, Washington, DC USA
[5] Mem Healthcare Syst, Pembroke Pines, FL USA
[6] MedStar Washington Hosp Ctr, Danville, PA USA
[7] Georgetown Univ, Sch Med, Demarest, NJ USA
[8] Georgetown Univ, Richmond, VA USA
[9] Georgetown Univ, Washington, DC USA
[10] Georgetown Univ, Sch Med, Arlington, VA USA
[11] Inova Fairfax Hosp, Washington, DC USA