A prospective randomized EORTC intergroup Phase 3 study comparing the complications of elective nephron-sparing surgery and radical nephrectomy for low-stage renal cell carcinoma: Van Poppel H, Da Pozzo L, Albrecht W, Matveev V, Bono A, Borkowski A, Marechal JM, Klotz L, Skinner E, Keane T, Claessens I, Sylvester R, European Organization for Research and Treatment of Cancer (EORTC); National Cancer Institute of Canada Clinical Trials Group (NCIC CTG); Southwest Oncology Group (SWOG); Eastern Cooperative Oncology Group (ECOG). Department of Urology, University Hospital Gasthuisberg, Katholieke Universiteit Leuven, Leuven, Belgium