PD4-1: Environmental melamine exposure increase renal tubular injury in patients with calcium urolithiasis: The possible mechanism of melamine associated urolithiasis formation

PD4-2: Atorvastatin treatment can improve urine stone risk factors and increase serum testosterone levels in kidney stone patients

PD4-3: Comparing tract creation using plasma vaporization with metal dilatation in percutaneous nephrolithotomy with propensity score matching

PD4-4: Is retropertoneal drain necessary for tubeless percutaneous nephrolithotomy?

PD4-5: Retrograde intrarenal surgery in the management of pediatric urolithiasis - case series

PD4-6: Outpatient ureteroscopic holmiun laser lithotripsy achieves favorable outcomes in patients with single ureteral stone