title: A survey of contraceptive markets in four African countries.
mesh_terms: D003132:Commerce; D003270:Contraceptive Agents; D003273:Contraceptive Devices; D005193:Family Planning Services; D005869:Ghana; D006801:Humans; D007630:Kenya; D009549:Nigeria; D012919:Social Behavior; D013223:Statistics as Topic; D014454:Uganda
chemical_list: D003270:Contraceptive Agents