The upper esophageal sphincter: no man’s land
@article{AOE6477, author = {Fernando A. M. Herbella}, title = {The upper esophageal sphincter: no man’s land}, journal = {Annals of Esophagus}, volume = {5}, number = {0}, year = {2021}, keywords = {}, abstract = {}, issn = {2616-2784}, url = {https://aoe.amegroups.org/article/view/6477} }