TY  - RPRT
TI  - Lower esophageal ring.
AU  - R K Goyal
AU  - H M Spiro
PY  - 1970
DO  - 10.1056/nejm197009032831017
UR  - https://pubmed.ncbi.nlm.nih.gov/5434144/
ID  - 5434144
ER  -