A six months old girl is having recurrent UTI. Ultrasound abdomen shows bilateral hydronephrosis. MCU (Micturating cysto urethrogram) shows bilateral Grade IV vesicoureteral reflux. The treatment of choice is:
Endoscopic injection of poly teflon at the ureteric orifices Ureteric re-implantation Bilateral Ureterostomy Prophylactic antibiotics