Perceptions about behind-the-counter availability of pseudoephedrine.
Shi
Chih-Wen
CW
Ganiats
Theodore G
TG
D000697:Central Nervous System Stimulants / Q000600:supply & distribution*; D004809:Ephedrine / Q000600:supply & distribution*; D004366:Nonprescription Drugs; D010593:Pharmaceutical Services / Q000331:legislation & jurisprudence; D014481:United States
D000697:Central Nervous System Stimulants; D004366:Nonprescription Drugs; D004809:Ephedrine