From the Food and Drug Administration.
Nightingale
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Office of Health Affairs, FDA, Rockville, MD 20857.
D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D003486:Cyanides / Q000506:poisoning; D004343:Drug Implants; D004348:Drug Labeling; D006350:Heart Valve Prosthesis; D006801:Humans; D016912:Levonorgestrel; D009599:Nitroprusside / Q000009:adverse effects*; D009644:Norgestrel / Q000008:administration & dosage*; D011475:Prosthesis Failure; D014481:United States; D014486:United States Food and Drug Administration
D003271:Contraceptive Agents, Female; D003486:Cyanides; D004343:Drug Implants; D009599:Nitroprusside; D009644:Norgestrel; D016912:Levonorgestrel