[1] Univ Carlo Bo, Fac Sci & Technol, Hist Inst, Lab Anal, I-61029 Urbino, Italy
[2] Univ Sao Paulo, Fac Med, Dept Pharmacol, BR-14049 Ribeirao Preto, Brazil
[3] Univ Sao Paulo, Sch Dent, Dept Morphol Entomatol & Physiol, BR-14049 Ribeirao Preto, Brazil