P-glycoprotein expression, tumor weight, age, and relapse in patients with stage i and II favorable-histology Wilms' Tumor - Teixeira, Roberto Augusto Plaza; Odone-Filho, Vicente; Camargo, Beatriz de; Zerbini, Maria Claudia; Fillipi, Renne; Alencar, Arlaine; Cristofani, Lilian (Pediatric Hematology and Oncology, 2011)