Lars H Lund1, Michael W Rich2, Paul J Hauptman3. 1. Karolinska Institutet, Department of Medicine, 17177 Stockholm, Sweden; Karolinska University Hospital, Heart and Vascular Theme, 17176 Stockholm, Sweden. Electronic address: lars.lund@alumni.duke.edu. 2. Washington University, St Louis MO. 3. University of Tennessee Graduate School of Medicine, Knoxville TN.