TY  - JOUR 
T1  - 
       
JO  - Brazilian Journal of Medical and Biological Research
A1  - Ribeiro, A.L.P.
A1  - Drummond, J.B.
A1  - Volpini, A.C.
A1  - Andrade, A.C.
A1  - Passos, V.M.A.
SN  - 0100-879X
UL  - 10.1590/S0100-879X1999000300008
VL  - 32 
Y1  - 1999
PB  - Brasil 
ER  -