1 Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria.
2 Department of Medical Statistics, Informatics and Health Economics, Medical University of Innsbruck, Innsbruck, Austria.
3 IRCCS Foundation Ca' Grande Ospedale Maggiore Policlinico, Dino Ferrari Center, Neuroscience Section, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
4 Department of Neuroradiology, Medical University of Innsbruck, Innsbruck, Austria.
5 Department of Urology, Medical University of Innsbruck, Innsbruck, Austria.
6 Department of Heart and Great Vessels "A. Reale", Sapienza University of Rome, Rome, Italy.
7 Department of Neurology, Santa Maria Hospital, Terni, Italy.
8 Department of Neuroscience, Mental Health and Sensory Organs, Sapienza University of Rome, Rome, Italy.
9 Department of Neurology, Dysautonomia Center, New York University School of Medicine, New York, New York, USA.