title: Prolonged use of heat and moisture exchangers: why do we keep changing things?
authors.forename: D
authors.initials: D
authors.lastname: Hess
mesh_terms: D003422:Critical Care; D004867:Equipment Design; D004869:Equipment Safety; D006361:Heating / Q000295:instrumentation*; D006801:Humans; D006813:Humidity; D012121:Respiration, Artificial / Q000295:instrumentation*