1. Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital of Basel, Basel, Switzerland.
2. Department of Neuropathology, Institute of Pathology, University Hospital of Basel, Basel, Switzerland.
3. Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital of Lausanne, Lausanne, Switzerland.
4. Division of Neuroradiology, Department of Radiology, University Hospital of Basel, Basel, Switzerland.
5. Clinical Trial Unit, University Hospital of Basel, Basel, Switzerland.
6. Institute for Surgical Research and Hospital Management, University Hospital of Basel, Basel, Switzerland.