@article{article59672ab7,
title   = {The levonorgestrel releasing intrauterine device reduces CA-125 serum levels in patients with endometriosis},
author = {Silva, Ana Carolina de Sá Rosa e and Silva, Júlio César Rosa e and Nogueira, Antonio Alberto and Petta, Carlos Alberto and Ferriani, Rui Alberto},
year = {2007},
doi = {10.1016/j.fertnstert.2006.02.082},
journal   = {Fertility and Sterility}
}