Plan BTC: the case for a third class of drugs in the United States.
Healey
Daniel
D
D000019:Abortifacient Agents; D003281:Contraceptives, Postcoital / Q000009:adverse effects; D017277:Drug Approval / Q000331:legislation & jurisprudence*; D005260:Female; D005544:Forecasting; D049673:History, 20th Century; D006801:Humans; D007880:Legislation, Drug / Q000266:history / Q000639:trends; D016912:Levonorgestrel / Q000008:administration & dosage; D004366:Nonprescription Drugs / Q000145:classification*; D004364:Pharmaceutical Preparations / Q000145:classification*; D006113:United Kingdom; D014481:United States; D014486:United States Food and Drug Administration
D000019:Abortifacient Agents; D003281:Contraceptives, Postcoital; D004366:Nonprescription Drugs; D004364:Pharmaceutical Preparations; D016912:Levonorgestrel