TY  - JOUR 
T1  - Is there a crack epidemic among students in Brazil?: comments on media and public health issues
JO  - Cadernos de Saúde Pública
A1  - Nappo, Solange Aparecida
A1  - Sanchez, Zila M.
A1  - Ribeiro, Luciana Abeid
SN  - 0102-311X
UL  - 10.1590/S0102-311X2012000900004
VL  - 28 
Y1  - 2012
PB  - Brasil 
ER  -