 When insulin became available as therapy in 1922, Joslin's corps of nurses became the forerunners of certified diabetes educators, providing instruction in diet, exercise, foot care and insulin dosing, and established camps for children with diabetes throughout New England.With insulin available, Joslin enlarged his medical practice into a team that evolved into the Joslin Clinic, which was affiliated with the New England Deaconess Hospital and the Harvard Medical School.Joslin's associates were chosen to expand his interests in foot salvage for the middle aged diabetic prone to peripheral vascular disease as well as group education for diabetics in the hospital setting.