Letrozole and norethisterone acetate in rectovaginal endometriosis. Posted on 1 September 200717 February 2020 by admin Remorgida V, Abbamonte HL, Ragni N, Fulcheri E, Ferrero S. Letrozole and norethisterone acetate in rectovaginal endometriosis. Fertil Steril 2007;88:724-726.https://www.fertstert.org/article/S0015-0282(07)00055-6/fulltext