1Gaubius Laboratory TNO Prevention and Health, Division of Vascular and Connective Tissue Research, P.O. Box 2215, 2301 CE Leiden, The Netherlands
2Department of Veterinary Basic Sciences, The Royal Veterinary College (University of London), Royal College Street, London NW1 OTU, U.K.
3Department of Rheumatology and Clinical Immunology, University Hospital Utrecht, P.O. Box 85500, 3508 GA Utrecht, The Netherlands
4Julius Silver Institute of Biomedical Science and Department of Biomedical Engineering, Technion (Israel Institute of Technology), Haifa 32000, Israel