TY  - JOUR 
T1  - Is atrial fibrillation a preoperative risk factor in elderly patients without heart failure after hip fracture surgery?
JO  - Revista da Associação Médica Brasileira
A1  - Lei, Daoyun
A1  - Sun, Jie
SN  - 0104-4230
UL  - 10.1590/1806-9282.20220086
VL  - 68 
Y1  - 2022
PB  - Brasil 
ER  -