1. Department of Internal Medicine II, Cardiology, University of Ulm, D-89081 Ulm, Germany
2. GSF-National Research Center for Environment and Health, Institute for Epidemiology, 85764 Neuherberg, Germany
3. Inserm U508, Institut Pasteur de Lille, 59079 Lille Cedex, France
4. Institute for International Health, University of Sydney, Sydney NSW 2042, Australia
5. Department of Medicine, Royal Infirmary, Glasgow G31 2ER, United Kingdom