Evaluation of the Incidence of Bladder Perforation After Transurethral Bladder Tumor Resection in a Residency Setting - El Hayek, Omar R.; Coelho, Rafael Ferreira; Dall'oglio, Marcos Francisco; Murta, Cláudio Bovolenta; Ribeiro Filho, Leopoldo Alves; Nunes, Ricardo Luis Vita; Chade, Daher; Menezes, Marcos; Srougi, Miguel (Journal of Endourology, 2009)