@misc{indiciaec911660466c3, title = {Upper and lower gastrointestinal endoscopy: are thinner endoscopes preferable?}, author = {G A Lehmann}, year = {1996}, doi = {10.1055/s-2007-1005507}, url = {https://pubmed.ncbi.nlm.nih.gov/8858233/}, note = {Source identifier: 8858233} }