6Momoda M, Harada T,Terawa N,et al. Long - term use of dienogestfor the treatment of endometriousis. J Obstet Gynaecol Res,2012,35(4):1090-1091.
7Weisberg E, Hickev M, Palmer D, et al. A pilot study to assess theeffect of three compared compared to placebo in women using impl-anon. Hum Reprod,2012,13(10) :287 -288.