@misc{indiciaec77420bf106b, title = {The gastrointestinal contrast study. Methods and interpretation.}, author = {J A Gomez}, year = {1974}, doi = {10.1016/s0091-0279(74)50085-1}, url = {https://pubmed.ncbi.nlm.nih.gov/4612943/}, note = {Source identifier: 4612943} }