@article{articlea36df36b,
title   = {Evaluation of pain in three hysterosalpingography techniques: metal cannula with and without paracervical blockage and balloon catheter},
author = {Mello, João F. L. de and Abrão, Mauricio S. and Cerri, Giovanni Guido and Barros, Nestor de},
year = {2006},
journal   = {American Journal of Roentgenology}
}