Endoscopy, Table of Contents Endoscopy 2020; 52(07): v23DOI: 10.1055/a-1129-1039 Author commentary Author commentary on Sung Woo Ko et al. Recommend Article Abstract Referred to by: A novel method of biopsy for indeterminate pancreaticobiliary strictures: tube-assisted biopsyEndoscopy 2020; 52(07): 589-594DOI: 10.1055/a-1127-3265 Full Text