[1] Icahn Sch Med Mt Sinai, Mt Sinai Beth Israel, Dept Surg, Div Endocrine Surg, New York, NY 10003 USA
[2] Harvard Univ, Sch Med, Massachusetts Gen Hosp, Endocrine Surg Serv,Dept Surg, Boston, MA 02115 USA
[3] Harvard Univ, Sch Med, Massachusetts Eye & Ear Infirm, Div Thyroid & Parathyroid Endocrine Surg, Boston, MA 02115 USA