End of an era: The race to replace Viagra
As the last patents on the erectile dysfunction drug run out, interest in finding new treatments has been renewed. reports.
ARE we witnessing the end of an era for Viagra and Pfizer?
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SUBSCRIBEAs the last patents on the erectile dysfunction drug run out, interest in finding new treatments has been renewed. David Cox reports.
ARE we witnessing the end of an era for Viagra and Pfizer?
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