@article{articlea130deb2,
title   = {Suprapapillary puncture ofn the common bile duct for selective biliary access: a novel technique (with videos)},
author = {Artifon, Everson L. A. and Sakai, Paulo and Ishioka, Shinichi and Hondo, Fábio Y. and Raju, Gottumukkala S.},
year = {2007},
doi = {10.1016/j.gie.2006.06.032},
journal   = {Gastrointestinal Endoscopy}
}