1. Lilly Development Center, Rue Granbonpré, 11 B-1348 Mont-Saint-Guibert, Belgium
2. International Microsurgical Training Centre (IMTC BV), Zuidersluisweg 2, 8243 RC Lelystad, The Netherlands; Department of Health, Safety and the Environment, Vrije Universiteit, Van de Boechorststraat 1, 1081 BT Amsterdam, The Netherlands
3. International Microsurgical Training Centre (IMTC BV), Zuidersluisweg 2, 8243 RC Lelystad, The Netherlands; Department of Animal Science, Solvay Pharmaceuticals, PO Box 900, 1380 DA Weesp, The Netherlands