1. From the Institute of Human Nutrition and Food Science, Christian-Albrechts University, Kiel, Germany (WL, AB-W, BH, and MJM); the Division of Medical Physics, Clinic for Diagnostic Radiology, University Medical Center Schleswig-Holstein, Kiel, Germany (EK and C-CG); and the Clinic for Diagnostic Radiology, University Medical Center Schleswig-Holstein, Kiel, Germany (MH)