In preparation for Pfizer's (PFE -0.5%) planned spinoff of its animal-health company Zoetis, the drug giant beefs up its board with familiar name: William Steere, former CEO who presided over launch of anti-impotence pill Viagra in '90s and mega-deal that gave PFE full control of cholesterol blockbuster Lipitor. He stepped down as director in 2011 but it's no surprise that he's been summoned for duty again.
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