Paul D. Colvin has been appointed senior vice president of clinical operations for North America, PPD, Inc. and Simon J. Britton has been named vice president of clinical operations for Asia. Mr. Colvin joins the company from Eli Lilly and Co. where he most recently directed clinical operations and global patient enrollment optimization. During his 14 years at Lilly, he held a series of leadership positions including chief operations officer for the global cardiovascular brand team; Europea...