Gawo 1 la 4. Zithunzi zolaula zidapangitsa kuti erectile iwonongeke (PIED): Kumvetsetsa kukula, sayansi, ndi chithandizo. Adapulumutsidwa ndi Dr. Tarek Pacha ku American Urologic Association ku San Diego 2016.
[youtube] https://youtu.be/M9xqIIWkP8M [/ youtube]
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