title: Observations on the calibration of acoustic reflectometry.
authors.forename: J T
authors.initials: JT
authors.lastname: Combs
mesh_terms: D000158:Acoustic Impedance Tests / Q000295:instrumentation*; D002138:Calibration / Q000592:standards; D004867:Equipment Design; D006801:Humans; D010034:Otitis Media with Effusion / Q000175:diagnosis