Andy Pickett1,2, Steven G Yoelin1,2, Marilyn S Kwolek1,2, Jon E Block1,2. 1. Dr. Pickett is with Toxin Science Ltd., Chester, United Kingdom and the Botulinum Research Center, Institute for Advanced Sciences in North Dartmouth, Massachusetts. 2. Drs. Yoelin and Kwolek are in private practice in Newport Beach, California and Danville, California, respectively. Dr. Block is an independent consultant in San Francisco, California.