Intern University Hamburg. Resident Children's Hospital, Kiel, Germany, staff pediatrician Germany, Germany, 1982-1985, 86-89. Research fellow University California, San Diego, 1985-1986.
Private practice Gettorf, Germany, since 1989. Lecturer University Kiel, 1990. Independent researcher in association with University Madrid, University Heidelberg, Germany, University Leipzig, Germany.
Coordinator research on short-term growth University Kiel, 1985-1989, private research, Germany and Spain, since 1989.