**Health services** include all services dealing with the **diagnosis and treatment of disease**, or the **promotion, maintenance and restoration of health**. These encompass both **personal and non-personal** health services.
They are the **most visible functions** of any health system, both to users and the general public.
**Service provision** refers to the way **inputs**—such as **money, staff, equipment and drugs**—are combined to allow the delivery of health interventions.
Improving **access, coverage and quality of services** depends on: