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Pfizer - Wikipedia
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Pfizer - Wikidata
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Pfizer Covid vaccine: Behind Pfizer's vaccine, an understated husband-and-wife 'dream team' | International Business News - Times of India
Pfizer agrees to let other companies make its COVID-19 pill - WINK News
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Pfizer seeks approval from US FDA for Covid-19 treatment
Pfizer to buy Medivation for $14 billion | Zee Business
