At the same time, other doctors were also experimenting with gland transplantation, including Serge Voronoff, who had become known for grafting monkey testicles into men. In 1920, Voronoff demonstrated his technique before several other doctors at a hospital in Chicago, at which Brinkley showed up uninvited. Though Brinkley was barred at the door, his appearance elevated his profile in the press, which eventually resulted in his own demonstration at a hospital in Chicago. Brinkley transplanted goat testicles into 34 patients, including a judge, an alderman, a society matron and the chancellor of the now-defunct Chicago Law School (not to be confused with the University of Chicago Law School), all while the press looked on. His public profile grew, and his gland business in Milford continued at a brisk pace.