The challenge of quantifying screening colonoscopy quality: Development and psychometric properties of the Colonoscopy Quality Score instrument R. Sáenz-Fuenzalida, A. Riquelme-Pérez, L.A. Díaz-Piga, X. García-Rocha, E. Fuentes-López, J. Arnold-Álvarez, L. Caro, A. Tchekmedyian, I. Orellana-Narváez, R. Jover-Martínez

Factors related to advanced colorectal neoplasm at the Policlínico Peruano Japonés V. Parra-Pérez, J. Watanabe-Yamamoto, A. Nago-Nago, M. Astete-Benavides, C. Rodríguez-Ulloa, G. Valladares-Álvarez, N. Núñez-Calixto, M. Yoza-Yoshidaira, T. Gargurevich-Sánchez, J. Pinto-Sánchez, J. Niebuhr-Kakiuchi, G. Uehara-Miyagusuku, J. Rodríguez-Grandez, R. Komazona-Sugajara, C.F. Gutiérrez de Aranguren

The frequency of sessile serrated adenomas detected during surveillance colonoscopy in patients with a history of colorectal cancer J.P. Pérez-Macías, J.C. Sánchez-del Monte, A.I. Hernández-Guerrero, W.D. Torrecilla-Ramírez, B.A. Sánchez-Jiménez, G.M. Salgado-Castellón