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Sildenafil and Big Pharma: A Uncertain Investment ?

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The legacy of Viagra, and its creator copyright, presents a challenging case study for investors. At first a blockbuster drug, yielding billions in revenue , its patent expiration created a deluge of https://mattiegszf747190.pennywiki.com/5512444/copyright_s_pill_and_pharma_a_risky_investment

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