The document discusses the definition and organization of hospitals. It provides definitions of a hospital from the WHO Expert Committee in 1963 and 1956. Hospitals can be classified in several ways, including by objective (e.g. general, special, teaching), administration/ownership, length of stay, medical staff type, bed capacity, type of care provided, teaching affiliation, and system of medicine. The document also discusses the roles and responsibilities of medical staff in ensuring quality care for patients.