title: Parasitism and contraceptives: a preliminary survey of the effect on haemoglobin levels.
mesh_terms: D003271:Contraceptive Agents, Female / Q000009:adverse effects*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D007434:Intrauterine Devices / Q000009:adverse effects*; D008288:Malaria / Q000453:epidemiology; D008297:Male; D009549:Nigeria; D010272:Parasitic Diseases / Q000097:blood / Q000453:epidemiology*
chemical_list: D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D006454:Hemoglobins