1. Department of Pharmacology and Toxicology, Virginia Commonwealth University, Massey Cancer Center, 401 College St., Richmond, VA 23298, USA
2. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
3. School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China