title: The child and the chain, or 3 + 3 = 9. Twenty-five unexpected similarities between two superficially dissimilar projects and the implications this has for the systematic development of the appropriate technology for personal health care in the developing world.
mesh_terms: D002648:Child; D002662:Child Health Services; D003906:Developing Countries; D006285:Health Planning; D006801:Humans; D007114:Immunization; D007239:Infections / Q000628:therapy; D009748:Nutrition Disorders / Q000628:therapy; D011320:Primary Health Care; D012034:Refrigeration; D013597:Systems Analysis; D013672:Technology; D014612:Vaccines
chemical_list: D014612:Vaccines