TY  - RPRT
TI  - Esophageal motion during breathing.
AU  - D Trop
AU  - A Baert
AU  - K P van de Woestijne
PY  - 1967
DO  - 10.3109/13813456709084921
UR  - https://pubmed.ncbi.nlm.nih.gov/4168932/
ID  - 4168932
ER  -