May 5 (Reuters) - Valeant Pharmaceuticals International Inc (NYSE:VRX) VRX.TO
* Valeant announces key appointments in dermatology and corporate communications leadership
* Stacey Williams has joined as Vice President of Marketing for Dermatology
* Announced lainie keller has joined as Vice President of Corporate Communications
* Keller joins company from Merck (NYSE:MRK) & Co Source text for Eikon: Further company coverage: VRX.TO