Amgen puts out welcome mat for Celgene’s Otezla reps, but will they join—and then stay?

Amgen is ponying up $13.4 billion for Celgene’s psoriasis blockbuster Otezla. But it's not just getting the drug—it's also picking up the 800 to 900 Celgene employees who work on Otezla. And some Otezla sale reps are worried.