TY  - RPRT
TI  - Tympanometry for Eustachian tube evaluation.
AU  - E R Harford
PY  - 1973
DO  - 10.1001/archotol.1973.00780010021006
UR  - https://pubmed.ncbi.nlm.nih.gov/4684901/
ID  - 4684901
ER  -