Expression of multidrug resistance proteins P-glycoprotein, multidrug resistance protein 1, breast cancer resistance protein and lung resistance related protein in locally advanced bladder cancer treated with neoadjuvant chemotherapy: biological and clinical implications: Diestra JE, Condom E, Del Muro XG, Scheffer GL, Perez J, Zurita AJ, Munoz-Segui J, Vigues F, Scheper RJ, Capella G, Germa-Lluch JR, Izquierdo MA, Department of Medical Oncology, Institut Catala d’Oncologia, Ciutat Santiaria i Universitaria de Bellvitge, Universitat Autonoma de Barcelona, Spain