Medical University Department, Division of General Internal and Emergency Medicine, Kantonsspital Aarau, Tellstrasse 25, 5001 Aarau, Switzerland. Institute of Human Nutrition, Columbia University Irving Medical Center, 622 West 168(th) Street, New York, NY 10032, United States. Medical University Department, Division of General Internal and Emergency Medicine, Kantonsspital Aarau, Tellstrasse 25, 5001 Aarau, Switzerland; Department of Health Professions, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland; Faculty of Life Sciences University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria. Division of Diabetes, Endocrinology, Nutritional Medicine, and Metabolism, Inselspital Bern, Bern University Hospital, University of Bern, Freiburgstrasse 15, 3010 Bern, Switzerland. Medical University Department, Division of General Internal and Emergency Medicine, Kantonsspital Aarau, Tellstrasse 25, 5001 Aarau, Switzerland; Medical Faculty of the University of Basel, Klingelbergstrasse 61, 4056 Basel, Switzerland. Medical University Department, Division of General Internal and Emergency Medicine, Kantonsspital Aarau, Tellstrasse 25, 5001 Aarau, Switzerland; Medical Faculty of the University of Basel, Klingelbergstrasse 61, 4056 Basel, Switzerland. Electronic address: schuetzph@gmail.com.