Statistics of An International Randomized Phase III Trial Comparing Radical Hysterectomy and Pelvic Node Dissection (RH) vs Simple Hysterectomy and Pelvic Node Dissection (SH) in Patients with Low-Risk Early-Stage Cervical Cancer (LRESCC). A Gynecologic Cancer Intergroup Study led by Canadian Cancer Trials Group (CCTG CX.5-SHAPE).