TY  - JOUR 
T1  - Effectiveness of wearing masks during the COVID-19 outbreak in cohort and case-control studies: a systematic review and meta-analysis
JO  - Jornal Brasileiro de Pneumologia
A1  - Floriano, Idevaldo
A1  - Silvinato, Antônio
A1  - Bacha, Hélio Arthur
A1  - Barbosa, Alexandre Naime
A1  - Tanni, Suzana
A1  - Bernardo, Wanderley Marques
SN  - 1806-3713
UL  - 10.36416/1806-3756/e20230003
VL  - 49 
Y1  - 2023
PB  - Brasil 
ER  -