Express Scripts Holding Co, the largest U.S. pharmacy benefit manager, is reviewing pharmacy programs run by AbbVie Inc and Teva Pharmaceuticals Industries Ltd after finding questionable practices at Valeant Pharmaceuticals International Inc’s partner pharmacy, Philidor Rx Services. Express Scripts and other big managers of prescription medicine benefits for health plans said on Thursday they would no longer work with Philidor as concerns mount that Philidor was improperly directing drugs made by Valeant to patients.