Gaseous Microemboli and the Influence of Microporous Membrane Oxygenators Heinz-H. Weitkemper, Bernd Oppermann, Andreas Spilker, Hermann-J. Knobl and Reiner Körfer J Extra Corpor Technol, 37 3 (2005) 256-264 Published online: 15 September 2005 DOI: 10.1051/ject/200537256