TY  - JOUR 
T1  - Efficacy of preoxygenation using tidal volume breathing: a comparison of Mapleson A, Bain's and Circle system
JO  - Revista Brasileira de Anestesiologia
A1  - Arora, Suman
A1  - Gupta, Priyanka
A1  - Arya, Virender Kumar
A1  - Bhatia, Nidhi
SN  - 0034-7094
UL  - 10.1016/j.bjane.2017.10.001
VL  - 68 
Y1  - 2018
PB  - Brasil 
ER  -