[1] Harvard Med Sch, Program Global Surg & Social Change, Boston, MA 02115 USA
[2] Harvard TH Chan Sch Publ Hlth, Boston, MA USA
[3] Icahn Sch Med Mt Sinai, New York, NY 10029 USA
[4] Massachusetts Eye & Ear Infirm, Boston, MA 02114 USA
[5] Tufts Univ, Sch Med, Boston, MA 02111 USA
[6] Univ Toronto, Toronto, ON, Canada