1. a Chelsea Laboratories, Inc., 8606 Reading Road, Cincinnati, OH 45215
2. b China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
3. c Nature's Sunshine Products, Inc., 1655 N. Main Street, Spanish Fork, UT 84460
4. d Armstrong Laboratory, Toxicology Division (AL/OET), Wright Patterson Air Force Base, Dayton, OH 45433–6573
5. e College of Pharmacy, University of Michigan, Ann Arbor, MI 48109