1. Institute of Anatomy, Paracelsus Medical University Salzburg & Nuremberg, Salzburg, Austria, and School of Allied Health, La Trobe University; Bundoora, Melbourne Victoria Australia
2. Institute of Anatomy, Paracelsus Medical University Salzburg and Nuremberg; Salzburg Austria
3. University of Southern Denmark, Odense, Denmark, and University Hospital of Copenhagen, Herlev and Gentofte; Denmark
4. Oslo and Akershus University College of Applied Sciences; Oslo Norway