@misc{indiciaec86c0a49ab1d, title = {Screening endoscopy: cost-effective?}, author = {John J O'Connor}, year = {2006}, doi = {10.1016/j.jamcollsurg.2006.08.015}, url = {https://pubmed.ncbi.nlm.nih.gov/17116569/}, note = {Source identifier: 17116569} }