 Due to having so many enslaved women, he would rotate from one to another, continuously trying to perfect the repair of their fistulas.Physicians and students lost interest in assisting Sims over the course of his backyard practice, and he recruited other enslaved women, who were healing from their own surgeries, to assist him.In 1855 Sims went on to found the Woman's Hospital in New York, the first hospital specifically for female disorders.