[1] Harvard Med Sch, Program Global Surg & Social Change, Boston, MA 02115 USA
[2] Harvard Med Sch, Dept Global Hlth & Social Med, Boston, MA 02115 USA
[3] Royal Natl Orthopaed Hosp, Orthopaed Oncol Unit, Stanmore, England
[4] Army Hosp Colombo, Dept Surg, Colombo, Sri Lanka
[5] Univ Colombo, Postgrad Inst Med, Colombo, Sri Lanka
[6] Uniformed Serv Univ Hlth Sci, Dept Surg, Bethesda, MD USA