@article{article375a2b06,
title   = {Predictive factors of trophoblastic invasion into the ampullary regions of the tubal wall in ectopic pregnancy},
author = {Cabar, F. R. and Pereira, P. P. and Schultz, R. and Zugaib, Marcelo},
year = {2006},
doi = {10.1093/humrep/del170},
journal   = {Human reproduction}
}