Columbia subject headings:
Avitaminosis--Etiology.
Drugs--Side effects.
Nutrition disorders--Etiology.
Harvard subject headings:
Avitaminosis--Etiology.
Drug-nutrient interactions.
Drugs--Side effects.
Nutrition disorders--Etiology.
Princeton subject headings:
Avitaminosis--Etiology.
Chemotherapy--Complications and sequelae.
Drugs--Side effects.
Nutrition disorders--Etiology.