Columbia subject headings:
Health.
Marijuana--Physiological effect.
Marijuana--Therapeutic use.
Tetrahydrocannabinol--Physiological effect.
Harvard subject headings:
Health
Marijuana--Physiological effect
Marijuana--Therapeutic use
Tetrahydrocannabinol--Physiological effect.
Princeton subject headings:
Marijuana--Physiological effect.
Marijuana--Toxicology.