[1] Univ Penn, Perelman Sch Med, Natl Clinician Scholars Program, Philadelphia, PA USA
[2] Corporal Michael J Crescenz Dept Vet Affairs Med C, Philadelphia, PA USA
[3] Univ Penn, Perelman Sch Med, Wharton Sch, Philadelphia, PA USA
[4] Univ Penn, Wharton Sch, Philadelphia, PA USA
[5] 3400 Civ Ctr Blvd, Philadelphia, PA 19104 USA