van Beest Paul A, Scheeren Thomas W L
Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB Groningen, The Netherlands.
J Clin Monit Comput. 2013 Jun;27(3):211-3. doi: 10.1007/s10877-013-9438-5. Epub 2013 Feb 6.