PD55-07 OUTCOMES AND PROCEDURAL COSTS FOLLOWING MINI-PERCUTANEOUS NEPHROLITHOTOMY OR FLEXIBLE URETEROSCOPIC LITHOTRIPSY FOR KIDNEY STONES BETWEEN 1-2CM: DATA FROM A PROSPECTIVE, RANDOMIZED CLINICAL TRIAL. (May 2022) - Dutta, Rahul; Mithal, Prabhakar; Klein, Ilan; Patel, Manish; Gutierrez-Aceves, Jorge