The Effect of Extracorporeal Circulation Time and Patient Age on Platelet Retention During Cardiopulmonary Bypass: A Comparison of Roller and Centrifugal PumpsBeverly G. Parault and Steven A ConradJ Extra Corpor Technol, 23 2 (1991) 34-38DOI: https://doi.org/10.1051/ject/1991232034