Real-Time Identification of Malignant Biliary Strictures on Cholangioscopy Images Using Explainable Convolutional Neural Networks With Heatmaps. - Passakron Phuangthongkham; Phonthep Angsuwatcharakon; Santi Kulpatcharapong; Peerapon Vateekul; Rungsun Rerknimitr (IEEE Access, 2023)