DOI:
10.1055/s-00035331
Revista Urología Colombiana / Colombian Urology Journal
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References
Chu PL, McFarland W, Gibson S. et al.
Viagra use in a community-recruited sample of men who have sex with men, San Francisco.
J Acquir Immune Defic Syndr 2003;
33 (02) 191-193
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