title: The need for adequate control groups in nutrition studies.
authors.forename: M E
authors.initials: ME
authors.lastname: Shils
mesh_terms: D000818:Animals; D001361:Avitaminosis / Q000150:complications; D001835:Body Weight; D002149:Energy Intake; D005260:Female; D006168:Guinea Pigs; D009422:Nervous System Diseases / Q000209:etiology*; D009748:Nutrition Disorders / Q000150:complications*; D011247:Pregnancy; D011297:Prenatal Exposure Delayed Effects; D051381:Rats; D012107:Research Design; D015032:Zinc / Q000172:deficiency
chemical_list: D015032:Zinc