@article{articlef87d0e19,
title   = {Reliability of bidirectional and variable-opening equipment for the measurement of pelvic floor muscle strength},
author = {Nunes, Fabiana Roberta and Martins, Carla Campos and Guirro, Elaine Caldeira de Oliveira and Guirro, Rinaldo Roberto de Jesus},
year = {2011},
journal   = {PM&R}
}