Division of Geriatrics;
Department of General Internal Medicine;
Inselspital;
Bern University Hospital;
and University of Bern;
Department of Cardiology;
Luzerner Kantonsspital;
Department of Biomedicine;
Laboratoryfor Signal Transduction;
Basel University Hospital;
Coronary; vessels; Anatomy; and; histology; Coronary; artery; Ultrasonography; Coronary; artery; disease; Atherosclerosis; Etiology; Age; factors;