Q:I know that the answer to the question "Which are there more of: hospitals in the public system or branches of medicine?" is in "Health care and emergency medical service in the city of Paris and its suburbs are provided by the Assistance publique - Hôpitaux de Paris (AP-HP), a public hospital system that employs more than 90,000 people (including practitioners, support personnel, and administrators) in 44 hospitals. It is the largest hospital system in Europe. It provides health care, teaching, research, prevention, education and emergency medical service in 52 branches of medicine. The hospitals receive more than 5.8 million annual patient visits.". Can you tell me what it is?
A:
branches of medicine