1. Institute of General Practice and Family Medicine (AM RUB), Medical Faculty, Ruhr University Bochum, 44801 Bochum, Germany
2. Department of Anesthesiology, Intensive Care, Palliative Medicine and Pain Therapy, HELIOS Klinikum, 24837 Schleswig, Germany
3. Last Aid Research Group International (LARGI), 24837 Schleswig, Germany