Liang, Yafen Nasal ventilation is more effective than combined oral-nasal ventilation during induction of general anesthesia in adult subjects. [electronic resource] - Anesthesiology Jun 2008 - 998-1003 p. digital Publication Type: Clinical Trial; Journal Article ISSN: 1528-1175 Standard No.: 10.1097/ALN.0b013e318174f027 doi Subjects--Topical Terms: AdultAnesthesia, General--instrumentationCarbon Dioxide--metabolismEquipment DesignFemaleHumansMaleMasksMiddle AgedMouthNasal CavityRespirationRespiratory MechanicsTidal Volume