TY  - JOUR 
T1  - Etiologic role of root canal infection in apical periodontitis and its relationship with clinical symptomatology
JO  - Brazilian Oral Research
A1  - Gomes, Brenda Paula Figueiredo de Almeida
A1  - Herrera, Daniel Rodrigo
SN  - 1806-8324
UL  - 10.1590/1807-3107bor-2018.vol32.0069
VL  - 32 
Y1  - 2018
PB  - Brasil 
ER  -