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Sildenafil in secondary pulmonary hypertension.
Cubillos-Garzón LA, Casas JP, Morillo CA. Cubillos-Garzón LA, et al. Int J Cardiol. 2003 May;89(1):101-2. doi: 10.1016/s0167-5273(02)00456-4. Int J Cardiol. 2003. PMID: 12727014 No abstract available.