Dr. Dicken Ko, director of Massachusetts General Hospital’s urology program, shakes hands with surgical team members after a news conference at the hospital, Monday, May 16, 2016, in Boston to announce the first penis transplant in the United States. Cancer patient Thomas Manning, of Halifax, Mass., received a transplanted penis in a 15-hour procedure last week. The organ was transplanted from a deceased donor. (AP Photo/Elise Amendola)

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