@article{articledd2ef545,
title   = {The levonorgestrel releasing intrauterine system and endometriosis staging},
author = {Gomes, Mariana Kefalás Oliveira and Ferriani, Rui Alberto and Silva, Júlio César Rosa e and Silva, Ana Carolina de Sá Rosa e and Vieira, Carolina Sales and Reis, Francisco José Cândido dos},
year = {2007},
doi = {10.1016/j.fertnstert.2006.11.044},
journal   = {Fertility and Sterility}
}