title: Longitudinal study of the caloric and nutrient intake of individual twins. II. Calcium, iron, and vitamin intakes.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001205:Ascorbic Acid; D001900:Boston; D002136:Calcium, Dietary; D002140:California; D002648:Child; D002664:Child Nutritional Physiological Phenomena; D002675:Child, Preschool; D005260:Female; D005518:Food Preferences; D006801:Humans; D007484:Iowa; D007501:Iron; D008297:Male; D009539:Nicotinic Acids; D009749:Nutrition Surveys; D009751:Nutritional Requirements; D011247:Pregnancy; D012256:Riboflavin; D012737:Sex Factors; D013831:Thiamine; D014427:Twins; D014801:Vitamin A; D014815:Vitamins
chemical_list: D002136:Calcium, Dietary; D009539:Nicotinic Acids; D014815:Vitamins; D014801:Vitamin A; D007501:Iron; D001205:Ascorbic Acid; D012256:Riboflavin; D013831:Thiamine