@misc{misc467dbc52,
title   = {Initial experience of sildenafil use in acute reduction of pulmonary arterial hypertension in advanced heart failure patients: comparison between two different protocols},
author = {Freitas Jr., A. and Bacal, F. and Moreira, L. F. P. and Fiorelli, A. I. and Honorato, R. and Oliveira, J. L. and Stolf, N. A. G. and Bocchi. E. A.},
year = {2007},
doi = {10.1016/S1567-4215(07)60081-2},
booktitle   = {Congress of the Heart Failure Association of The European Society of Cardiology}
}