R Zanner, S Pilge, E. F Kochs, M Kreuzer and G. Schneider
BJA: British Journal of Anaesthesia 103 ( 3 ): 394 - 399 , 2009
C. M Schulz, E Schneider, L Fritz, J Vockeroth, A Hapfelmeier, M Wasmaier, E. F Kochs and G. Schneider
BJA: British Journal of Anaesthesia 106 ( 1 ): 44 - 50 , 2011