title: Intergroup and intragroup variables affecting interpretation of studies of drug effects on nutritional status.
mesh_terms: D000042:Absorption; D000818:Animals; D003276:Contraceptives, Oral / Q000009:adverse effects; D004347:Drug Interactions; D064420:Drug-Related Side Effects and Adverse Reactions; D002149:Energy Intake; D004912:Erythrocytes / Q000032:analysis; D005260:Female; D005492:Folic Acid / Q000378:metabolism; D005502:Food; D006801:Humans; D008892:Milk; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements; D012256:Riboflavin / Q000378:metabolism
chemical_list: D003276:Contraceptives, Oral; D005492:Folic Acid; D012256:Riboflavin