[1] Univ Bradford, Inst Canc Therapeut, Richmond Rd, Bradford BD7 1DP, W Yorkshire, England
[2] Zarqa Univ, Fac Pharm, POB 132222, Zarqa 13132, Jordan
[3] Univ Med Mainz, Inst Toxikol, Gebaude 905-4 OG,Obere Zahlbacher Str 67, D-55131 Mainz, Germany
[4] Univ Torino, Dipartimento Sci & Tecnol Farmaco, Via P Giuria 9, I-10125 Turin, Italy