https://www.livescience.com/16824-erectile-dysfunction-drugs-linked-2200-deaths.html
https://www.latimes.com/archives/la-xpm-1993-09-12-sp-34485-story.html
https://www.livescience.com/16824-erectile-dysfunction-drugs-linked-2200-deaths.html
https://www.europeanurology.com/article/S0302-2838(08)00319-9/abstract
https://www.singlecare.com/blog/news/erectile-dysfunction-statistics/