Gamarra Manrique, R.R., Coapaza Camapaza, Y.I., Salazar Torres, F. and Ojeda Apaza, Y.M. 2012. Gallbladder cancer according to its histological type and TNM staging, Arequipa, Perú. ACTA MEDICA PERUANA. 29, 1 (Mar. 2012), 23-27.