title: Epidemiological research methods. Part VI. Planning a research project.
authors: Institute for Biostatistics, South African Medical Research Council.
authors: J L
authors: JL
authors: Botha
authors: D
authors: D
authors: Yach
mesh_terms: D004812:Epidemiologic Methods; D010865:Pilot Projects; D011897:Random Allocation; D012107:Research Design; D012494:Sampling Studies