Lutisan J G, Ploem S, Zijlstra J G
Intensive and Respiratory Care (ICB), University Medical Center Groningen, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands.
Eur J Intern Med. 2006 Dec;17(8):586. doi: 10.1016/j.ejim.2006.04.016.