مؤلف: Helga Fritsch

Helga Fritsch, MD, is Professor and Head of the Department of Anatomy, Histology, and Embryology, Division of Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria. Wolfgang Kuehnel, MD, was Honorary Doctor and Professor and Former Head of the Institute of Anatomy, University of Lübeck, Lübeck, Germany.