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Drugs like Viagra and Cialis, known as PDE5 inhibitors, work by increasing blood flow to the penis

[DOI] [PMC free article] [PubMed] [Google Scholar] 29.Burger-van Paassen N, Vincent A, Puiman PJ, van der Sluis M, Bouma J, Boehm G, van Goudoever JB, van Seuningen I, Renes IB

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