TY  - JOUR 
T1  - Outcomes of percutaneous nephrolithotomy: Comparison of elderly and younger patients
JO  - International braz j urol
A1  - Nakamon, T.
A1  - Kitirattrakarn, P.
A1  - Lojanapiwat, B.
SN  - 1677-5538
UL  - 10.1590/S1677-5538.IBJU.2013.05.12
VL  - 39 
Y1  - 2013
PB  - Brasil 
ER  -