TY  - JOUR 
T1  - Environmental tobacco smoke exposure among non-smoking waiters: measurement of expired carbon monoxide levels
JO  - Sao Paulo Medical Journal
A1  - Laranjeira, Ronaldo
A1  - Pillon, Sandra
A1  - Dunn, John
SN  - 1516-3180
UL  - 10.1590/S1516-31802000000400003
VL  - 118 
Y1  - 2000
PB  - Brazil 
ER  -