[1] Univ Napoli Federico II, Dipartimento Biol, I-80126 Naples, Italy
[2] Eastern Kentucky Univ, Dept Chem, Richmond, KY 40475 USA
[3] Dr Peset Univ Hosp, Fdn Promot Hlth & Biomed Res Valencian Reg FISABI, Serv Endocrinol, Valencia 46010, Spain
[4] Univ Valencia, Dept Physiol, Valencia, Spain