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Clemmesen, Jens Otto, Annamaria Giraldi, Peter Ott, Kim Dalhoff, Bent Adel Hansen, και Fin Stolze Larsen. Sildenafil Does Not Influence Hepatic Venous Pressure Gradient in Patients With Cirrhosis. The WJG Press and Baishideng, 2008.

Clemmesen, Jens Otto, et al. Sildenafil Does Not Influence Hepatic Venous Pressure Gradient in Patients With Cirrhosis. The WJG Press and Baishideng, 2008.