Some methodologic problems in health practice research and health planning.
D003710:Demography; D003906:Developing Countries; D006285:Health Planning; D008427:Maternal Health Services; D010548:Personal Health Services / Q000706:statistics & numerical data; D011314:Preventive Health Services; D012046:Rehabilitation; D012106:Research; D012959:Socioeconomic Factors; D013223:Statistics as Topic