Matioc, Adrian A The "bouncing sign" may optimize the insertion of the laryngeal tube. [electronic resource] - Canadian journal of anaesthesia = Journal canadien d'anesthesie Mar 2004 - 278-9 p. digital Publication Type: Letter ISSN: 0832-610X Standard No.: 10.1007/BF03019115 doi Subjects--Topical Terms: HumansIntubation, Intratracheal--instrumentationLaryngeal Masks