Changes in Cerebral Oxygenation during Transfusion Therapy Mumin Hakim, Dmitry Tumin, David P. Martin, Walter Samora, Allan C. Beebe, Jan E. Klamar, Ashley B. Hodge and Joseph D. Tobias J Extra Corpor Technol, 48 4 (2016) 173-178 Published online: 15 December 2016 DOI: 10.1051/ject/201648173