Proposal of a Macroscopic Classification for Tissular Lesions of the Bile Duct Detected During Peroral Cholangioscopy (POCS): 12. (October 2017) - Robles‐Medranda, Carlos; Soria‐Alcivar, Miguel; Valero, Manuel; Puga‐Tejada, Miguel; Oleas, Roberto; Alvarado‐Escobar, Haydee; Ospina‐Arboleda, Jesenia; Pitanga‐Lukashok, Hannah