@misc{indiciaeab65a5744080, title = {Ankylosing vertebral hyperostosis causing dysphagia.}, author = {M J Carlson and R N Stauffer and W S Payne}, year = {1974}, doi = {10.1001/archsurg.1974.01360040081021}, url = {https://pubmed.ncbi.nlm.nih.gov/4412031/}, note = {Source identifier: 4412031} }