[1] Massachusetts Eye & Ear Infirm, Dept Otolaryngol Head & Neck Surg, 243 Charles St, Boston, MA 02114 USA
[2] Harvard Med Sch, Dept Otolaryngol, Boston, MA USA
[3] Harvard TH Chan Sch Publ Hlth, Ctr Hlth Decis Sci, Boston, MA USA
[4] Harvard Med Sch, Program Global Surg & Social Change, Boston, MA USA