The health care delivery system in India operates at the village, sub-centre, primary health centre, and community health centre levels. At the village level, Accredited Social Health Activists (ASHAs), Anganwadi workers, and local dais provide primary medical care and health education. Sub-centres serve populations of 5000-3000 and are staffed by Lady Health Visitors who provide maternal and child health services, family welfare programs, and treatment of common illnesses. Primary health centres serve larger populations of 30,000-20,000 and have beds for patients as well as medical officers and staff. Community health centres serve the largest populations and have 30 beds as well as specialists and facilities for childbirth and minor sur