title: Voluntary contraction of the tensor tympani muscle and its audiometric effects.
authors.affiliation: Central Military Hospital, Utrecht, Netherlands.
authors.forename: A
authors.initials: A
authors.lastname: De Ru
authors.affiliation: Central Military Hospital, Utrecht, Netherlands.
authors.forename: W
authors.initials: W
authors.lastname: Heerens
authors.affiliation: Department of Defence Hearing Center of Excellence, San Antonio, Texas, USA.
authors.forename: M
authors.initials: M
authors.lastname: Packer