Letter: Dilantin therapy.
D005260:Female; D005492:Folic Acid / Q000627:therapeutic use*; D006801:Humans; D000860:Hypoxia / Q000139:chemically induced; D010672:Phenytoin / Q000037:antagonists & inhibitors*; D011247:Pregnancy
D010672:Phenytoin; D005492:Folic Acid