TY  - RPRT
TI  - Qualitative testing of the eustachian tube function.
AU  - S INGELSTEDT
AU  - U ORTEGREN
PY  - 1963
DO  - 10.3109/00016486309139988
UR  - https://pubmed.ncbi.nlm.nih.gov/13956500/
ID  - 13956500
ER  -