While working as a surgeon with his physician father and brother—William Worrall Mayo and Charles Mayo—in the hospital his father had helped establish in Rochester, Minnesota, William James Mayo joined the two in co-founding what would become the Mayo Clinic, a world-renowned nonprofit medical practice. William James became especially known for his innovations in stomach, gall bladder, and cancer operations. According to one story, what did William James help his father do when he was just 16? Discuss
Source: The Free Dictionary