TY  - RPRT
TI  - Surface tension lowering substance in Eustachian tube function.
AU  - W E Hagan
PY  - 1977
DO  - 10.1288/00005537-197707000-00001
UR  - https://pubmed.ncbi.nlm.nih.gov/577587/
ID  - 577587
ER  -