TY  - JOUR 
T1  - Clinical Observation of the Efficacy of Endoscopic Retrograde Cholangiopancreatography on Elder Choledocholithiasis and Its Effects on the Levels of TNF-α, IL-1, and IL-6
JO  - Revista da Associação Médica Brasileira
A1  - Shen, Yun-zhi
A1  - Peng, Xiao-hui
A1  - Bai, Yu
A1  - Xiong, Bin
A1  - Che, Ping
A1  - Jiang, De-quan
SN  - 0104-4230
UL  - 10.1590/1806-9282.64.11.1012
VL  - 64 
Y1  - 2018
PB  - Brasil 
ER  -