[1] Brigham & Womens Hosp, Dept Med, 75 Francis St, Boston, MA 02115 USA
[2] Brigham & Womens Hosp, Div Global Hlth Equ, 75 Francis St, Boston, MA 02115 USA
[3] Harvard Med Sch, Boston, MA USA
[4] Beth Israel Deaconess Med Ctr, Dept Med, Boston, MA 02215 USA
[5] Brigham & Womens Hosp, Dept Pathol, 75 Francis St, Boston, MA 02115 USA
[6] Brigham Educ Inst, Boston, MA USA
[7] Yale Univ, Sch Med, Off Int Med Student Educ, New Haven, CT USA
[8] Stellenbosch Univ, Ctr Hlth Profess Educ, Fac Med & Hlth Sci, Stellenbosch, South Africa