New low-dose, extended-cycle pills with levonorgestrel and ethinyl estradiol: an evolutionary step in birth control

• Autore principale: Anita Nelson (Autore)
• Natura: Libro
• Pubblicazione: Dove Medical Press, 2010-05-01T00:00:00Z.
• Soggetti: article
• Accesso online: Connect to this object online.

Anita NelsonHarbor-UCLA Hospital, Los Angeles Biomedical Research Institute, Los Angeles, CA, USAAim: To review milestones in development of oral contraceptive pills since their introduction in the US 50 years ago in order to better understand how a new formulation with low-dose estrogen in an exten...