Paul Chew, M.D., has been appointed to Chief Science Officer/Chief Medical Officer, for sanofi-aventis, U.S., effective April 1. He was previously President, R&D, sanofi-aventis, U.S. In these roles, Dr. Chew will establish a unified medical voice for sanofi-aventis U.S. among internal and external stakeholders. He will be responsible for overseeing U.S. medical affairs in addition to his continued oversight of the U.S. R&D organization in coordination with the parent company in Paris...