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- Cardiovascular data on sildenafil citrate / guest editor Randall M. Zusman . 1999. Vol. 83, No. 5A, [Supl.] - New York : Excerpta Medica , 1999 - 44 s. (American Journal of Cardiology; [Supl.]) [2, currently available 0, at library only 2]
- Chapters, articles