title: Emergency needle cricothyrotomy may not be useful in case of tracheal collapse.
authors.affiliation: Department of Anesthesia and Surgery, Mito Saiseikai General Hospital, Royal Gift Foundation, Mito, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: Y
authors.initials: Y
authors.lastname: Iinuma