article 2004 New route of danazol for endometriosis needs more studyCobellis L, Razzi S, Fava A, Severi FM, Igarashi M, Petraglia F. A danazol-loaded intrauterine device decreases dysmenorrheal, pelvic pain, and dyspareunia associated with endometriosis. Fertil Steril 2004;82:239–40. ·doi:10.1016/s1526-9523(04)00393-9