Rajiv De Silva, president and chief operating officer of Specialty Pharmaceuticals at Valeant Pharmaceuticals is leaving the company to pursue other interests. Mr. De Silva will remain with the company through the remainder of the year, when the integration planning efforts related to the Medicis Pharmaceutical acquisition are completed. Mr. De Silva will lead the integration planning efforts and it’s expected that a number of Medicis executives will accept positions with Valeant following the a...