Health care in developing countries.
D003150:Community Health Workers; D003695:Delivery of Health Care; D003906:Developing Countries; D006296:Health Services / Q000706:statistics & numerical data; D006801:Humans; D007390:International Agencies; D009313:National Health Programs; D011056:Political Systems; D011320:Primary Health Care; D013397:Sudan; D014838:Volunteers; D014944:World Health Organization