1. School of Pharmacy, College of Medicine, National Taiwan University, Number 1, Jen-Ai Road, Section 1, Room 1336, Taipei, Taiwan 10018, ROC
2. Clinical Psychopharmacology Section, Chemical Biology Research Branch, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Department of Health and Human Services, Baltimore, Maryland 21224
3. School of Pharmacy, West Virginia University, P.O. Box 9500, Morgantown, West Virginia 26506