1 Department of Medicine II, Saarland University Medical Center, Saarland University, Homburg, Germany; Endokrinologikum Ulm, Ulm, Germany. Electronic address: grigorioschristid@gmail.com.
2 Department of Medicine II, Saarland University Medical Center, Saarland University, Homburg, Germany; Laboratory of Metabolic Liver Diseases, Department of General, Transplant and Liver Surgery, Centre for Preclinical Research, Medical University of Warsaw, Poland.