1. Institute of Aerospace Medicine, German Aerospace Center, Cologne (F.H., U.L., J.J., J.T.).
2. Department of Internal Medicine III (F.H., H.R., S.B.), University of Cologne, Germany.
3. Department of Anaesthesiology and Intensive Care Medicine, Cologne-Merheim Medical Center, University of Witten Herdecke, Germany (U.L.).
4. Division of Cardiology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas (V.G.Z., B.D.L.).
5. Department of Internal Medicine and Cardiology, Evangelical Clinic Weyertal, Cologne, Germany (H.R.).
6. Working Group on Cardiovascular Magnetic Resonance, Experimental and Clinical Research Center –a joint cooperation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin, Germany (L.Z., J.S.-M.).
7. Department of Cardiology and Nephrology, HELIOS Hospital Berlin-Buch, Germany (L.Z., J.S.-M.).
8. Department of Anaesthesiology, Medical Faculty, RWTH Aachen University, Germany (M.H.).
9. Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, Dallas (B.D.L.).
10. Aerospace Medicine (J.J.), University of Cologne, Germany.