Low-dose levonorgestrel and ethinyl estradiol patch and pill: a randomized controlled trial.
Mount Sinai School of Medicine, New York, New York.
Katherine D
KD
LaGuardia
D003271:Contraceptive Agents, Female / Q000008:administration & dosage*; D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage*; D011247:Pregnancy
D003271:Contraceptive Agents, Female; D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol; D016912:Levonorgestrel