title: Filters and Ayre's T-piece.
authors.forename: R
authors.initials: R
authors.lastname: Marcus
authors.forename: J
authors.initials: J
authors.lastname: Wandless
authors.forename: J
authors.initials: J
authors.lastname: Thompson
mesh_terms: D000403:Airway Resistance; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D001239:Inhalation; D008397:Masks; D012121:Respiration, Artificial / Q000295:instrumentation*