@misc{indiciaec95f30d20418, title = {Upper gastrointestinal tract.}, author = {Johanna C Bendell and Christopher Willett}, year = {2006}, doi = {10.1007/0-387-25354-8\_6}, url = {https://pubmed.ncbi.nlm.nih.gov/16335015/}, note = {Source identifier: 16335015} }