Uterine ultrasonographic changes during endometriosis treatment: a comparison between levonorgestrel-releasing intrauterine devices and a gonadotropin-releasing hormone agonist - Manetta, Luiz Alberto; Martins, Wellington de Paula; Silva, Júlio César Rosa e; Silva, Ana Carolina Japur de Sá Rosa e; Nogueira, Antonio Alberto; Ferriani, Rui Alberto (Ultrasound in Medicine and Biology, 2009)