Prometheus Laboratories, a specialty pharmaceutical company, announced the appointment of Mark Spring as senior vice president and chief financial officer. Spring was most recently SVP and CFO at Hyperion Therapeutics. Prior to Hyperion, Spring was vice president of finance and controller at MedImmune.
 
Centron, a medical communications company, has announced several appointments and promotions.  Christie Miller has been appointed account supervisor; Lisa Kaufman has been promoted to account group supervisor; Ann Bledsoe has been promoted to managing editor; and Leslie Bowe has been promoted to senior account executive.