Mario Cavagna, Joao Batista A Oliveira, Claudia G Petersen, Ana L Mauri, Liliane F I Silva, Fabiana C Massaro, Ricardo L R Baruffi and José G Franco*
* Corresponding author: José G Franco crh@crh.com.br
Reproductive Biology and Endocrinology 2012, 10:44 doi:10.1186/1477-7827-10-44