TY  - JOUR 
T1  - In the april 2007 issue of Clinics
JO  - Clinics
A1  - Rocha-e-Silva, Mauricio
SN  - 1807-5932
UL  - 10.1590/S1807-59322007000200001
VL  - 62 
Y1  - 2007
PB  - Brasil 
ER  -