Sanri, Erkman The Impact of Head of Bed Elevation on Optic Nerve Sheath Diameter in Cervical Collar Applied Healthy Volunteers. [electronic resource] - The Journal of emergency medicine Apr 2019 - 371-377 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 0736-4679 Standard No.: 10.1016/j.jemermed.2018.12.043 doi Subjects--Topical Terms: AdultAnalysis of VarianceCraniocerebral Trauma--classificationFemaleHealthy Volunteers--statistics & numerical dataHumansImmobilization--instrumentationMaleOptic NerveProspective StudiesReproducibility of ResultsUltrasonography--methodsWeights and Measures--instrumentation