title: The 'African enigma' - another explanation.
authors: H
authors: H
authors: Feldmeier
authors: I
authors: I
authors: Krantz
mesh_terms: D000143:Acids / Q000378:metabolism; D003041:Coca; D019970:Cocaine-Related Disorders; D004032:Diet; D005753:Gastric Mucosa / Q000378:metabolism; D016481:Helicobacter Infections / Q000150:complications*; D006373:Helminthiasis / Q000150:complications; D006801:Humans; D009549:Nigeria; D010568:Peru; D010946:Plants, Medicinal; D013274:Stomach Neoplasms / Q000453:epidemiology / Q000209:etiology*
chemical_list: D000143:Acids