title: Major central nervous system malformations in South Wales. I. Incidence, local variations and geographical factors.
mesh_terms: D000757:Anencephaly / Q000453:epidemiology* / Q000209:etiology; D002980:Climate; D005260:Female; D055593:Geological Phenomena; D005844:Geology; D006801:Humans; D006849:Hydrocephalus / Q000453:epidemiology* / Q000209:etiology; D007231:Infant, Newborn; D008297:Male; D011156:Population Density; D011446:Prospective Studies; D011847:Radioactive Fallout; D012111:Residence Characteristics; D012189:Retrospective Studies; D016135:Spinal Dysraphism / Q000453:epidemiology* / Q000209:etiology; D014852:Wales; D014881:Water Supply
chemical_list: D011847:Radioactive Fallout