2005-2009	Member of Steering committee of Graduate College GK1172 (FIRST)
2004	Board Certified in Clinical Pharmacology (FA Klinische Pharmakologie)
2003	Board Certified in Immunology (Fachimmunologe der DGfI)
2001-2006	Head of the Schleussner Foundation Immune Pharmacology, Clinic of the Goethe University Frankfurt Main
1997-2001	Assistant Professor (C-2 since 1999), Institute of Pharmacology, Head: Prof. Dr. K. Resch, Medical School Hannover, Germany
1995-1997	Assistant Professor, Department of Pathology at the School of Medicine, Case Western Reserve Reserve University; funded by the Deutsche Forschungsgemeinschaft and Kidney Foundation of Ohio
1994-1995	Senior Postdoctoral Scholar in Nephrology (VAMC) at the School of Medicine, University of California in San Francisco, UCSF, funded by the DFG
1994	Jan-Brod-Award in Nephrology
since 1993	Habilitation: Assistant Professor and University Teacher at the Medical School of Hannover; Board Certified in the field "Pharmacology and Toxicology"
1992	Senior Research Assistent at the Institute of Clinical Molecular Pharmacology (Head: Prof. Dr. K. Resch) at the Medical School of Hannover, Germany. P.I. of research group "Mechanisms of Chronic Kidney Inflammation" (Grant of Deutsche Forschungsgemeinschaft, SFB 244/B1)
1992	Course and Safety Approval in Molecular Biology and Engineering (according to German Federal Law : 15 Abs.2 Satz 1 Nr.3 GenTSV)
1991	Visiting Research Assistant at the BASF-Bioresearch Corp., Cambridge, MA, U.S.A. (3 mo) (BBC now at Worcester, MA.)
1987	Senior Postdoctoral Scholar in Pharmacology at the Institute of Clinical Molecular Pharmacology (Head: Prof. Dr. K. Resch) at the Medical School of Hannover
1987	Clinical and scientific advisor of the Bissendorf-Peptides Corporation (Clinical Trials with rh Parathyroid Hormone)
1985-1987	Clinical Fellowship in Pediatrics at the Pediatric Clinic of the University of Göttingen; Head: Prof. Dr. W. Schröter
1986	Award for the scientifically most excellent thesis of the year at the Medical School Hannover ("Promotionspreis der Freundesgesellschaft der MHH") "Foreign Medical Graduate Examination in Medical Sciences" (FMGEMS) former: Visa Qualifying Examination for Non-U.S.-citizen, ECFMG, Philadelphia, PA.
1986	Medical Doctor Degree ("Promotion"; Dr. med.) at the Medical School Hannover obtaining the grade "excellent". Title of the published thesis: "Multiple pre- and postreceptor defects in pseudohypoparathyroidism. (A multicentre study with twenty four patients)."
1985	Medical License ("Approbation"; entitles to practise as a physician)
1981-1985	Start of scientific career in the Department of Endocrinology (Head: Prof. Dr. A.v.z. Mühlen) Supervisor to accomplish the medical thesis: Prof. Dr. R.-D. Hesch/ Dr. H. Jueppner (now at Harvard Medical School)
1979	Start to study Human Medicine at the Medical School Hannover, Germany