title: Investigations concerning the prevalence of nutritional deficiencies and intestinal malabsorption among rural populations of the West Indies. I. Methodology.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy; D004044:Dietary Proteins; D005243:Feces / Q000032:analysis; D005260:Female; D005492:Folic Acid; D006801:Humans; D007408:Intestinal Absorption; D007583:Jejunum; D008286:Malabsorption Syndromes / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009584:Nitrogen / Q000378:metabolism; D009748:Nutrition Disorders / Q000453:epidemiology*; D009749:Nutrition Surveys; D011647:Puerto Rico; D012424:Rural Population; D012499:Sanitation; D012959:Socioeconomic Factors; D014805:Vitamin B 12 / Q000097:blood; D014900:West Indies; D014994:Xylose
chemical_list: D004044:Dietary Proteins; D005492:Folic Acid; D014994:Xylose; D009584:Nitrogen; D014805:Vitamin B 12