1. Division of Epidemiology and Biometry Carl von Ossietzky University of Oldenburg Oldenburg Germany
2. Section for Kidney Disease and Hypertension, Clinic of Internal Medicine Klinikum Oldenburg Oldenburg Germany
3. Department of Anaesthesiology, Intensive Care Medicine, Emergency Medicine, Pain Therapy Klinikum Oldenburg Oldenburg Germany
4. Pharmacoepidemiology and Risk Management RTI Health Solutions Barcelona Spain
5. Clinical Epidemiology Leibniz Institute for Prevention Research and Epidemiology – BIPS Bremen Germany