TY  - JOUR 
T1  - Outcome and complications of percutaneous nephrolithotomy as primary versus secondary procedure for renal calculi
JO  - International braz j urol
A1  - Reddy, S. V. Krishna
A1  - Shaik, Ahammad Basha
SN  - 1677-5538
UL  - 10.1590/S1677-5538.IBJU.2014.0619
VL  - 42 
Y1  - 2016
PB  - Brazil 
ER  -