∗Department of Neurosurgery, University of Bern, Inselspital, Bern, Switzerland
†Department of Neurosurgery and F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA
‡Department of Otorhinolaryngology, Head and Neck Surgery
§Institute for Diagnostic and Interventional Neuroradiology, University of Bern, Inselspital, Bern
||Department of Diagnostic Imaging, University Children's Hospital Zürich, Zürich, Switzerland.
Address correspondence and reprint requests to Robert H. Andres, MD, Department of Neurosurgery, University of Bern, Inselspital, Freiburgstrasse 10, 3010 Bern, Switzerland; E-mail: [email protected]
Received 3 February, 2017
Accepted 21 March, 2017
This study was approved by the Ethical Committee of Bern (Kantonale Ethikkommision, KEK, Bern, Switzerland), the Swiss Ethic Committee on research involving humans. The study has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
The authors report no conflicts of interest.
