1. people: refers to all kinds of people involved in medical services, including doctors, nurses, pharmacists, managers, etc. , as well as their cooperative relationship and communication methods.
2. Machines: refer to the types, quality and uses of medical devices, as well as possible failures and damages.
3. Materials: refers to the selection, quality, use and preservation of medical supplies, drugs and other materials, including the disposal of expired, contaminated and foreign bodies.
4. Law: refers to the medical care activities and processes provided by medical service providers, such as clinical treatment, surgery, drug use, etc. , as well as the regulations and standards of these activities and processes.
5. Environment: refers to the physical, technical, organizational and cultural environment of medical service providers, such as equipment, space, time, staffing, management mode, etc.