1. Burn Centre, Red Cross Hospital, PO Box 1074, 1940 EB Beverwijk, the Netherlands.
2. Department of Traumasurgery, Leiden University Medical Centre, K6-R, PO Box 9600, 2300 RC Leiden, the Netherlands.
3. Department Product and Process Development, Sanquin Blood Bank, Postbus 9892, 1006 AN Amsterdam, The Netherlands.
4. Department of Blood Cell Research, Sanquin Research, Postbus 9892, 1006 AN Amsterdam, The Netherlands.