Related events:

1. Saturday 12th of June 1920 (x) — Surgeon and grafting pioneer Serge Voronoff performs the first official transplantation of a monkey gland into a human
   The monkey gland would be cut in pieces of about two centimeters long by a half centimeter wide and a few millimeters deep. The surgeon would then introduce two grafts in the scrotum, which he fixed with stitches taken off after eight days. Among forty men operated on during the 1920's-30's at the Villa Molière in Auteil, at a nursing home, Ambroise Paré in Neuilly, and the Rue Montaigne nursing home were nine employees, seven doctors, four engineers, four men of letters, three architects, three manufacturers, two attorneys, two university professors, one man of private means, one agronomist, one painter, and one worker. Nine were between the ages of 20 and 40, eighteen were between 41 and 60 and seventeen were between 61 and 80.