Coagulation Patterns in Perfusion with Low Systemic Heparinization L. K. von Segesser, B. M. Weiss, E. Garcia, E. von Felten and M. I. Turina J Extra Corpor Technol, 23 3 (1991) 80-85 Published online: 21 August 2023 DOI: 10.1051/ject/199123380