1 Department of Neurology, University Hospital Center Zagreb, Referral Center for Autonomic Nervous System Disorders, Kišpatićeva 12, HR-10000, Zagreb, Croatia.
2 Department of Neurology, University Hospital Center Zagreb, Referral Center for Autonomic Nervous System Disorders, Kišpatićeva 12, HR-10000, Zagreb, Croatia. mhabek@mef.hr.
3 Department of Neurology, School of Medicine, University of Zagreb, Zagreb, Croatia. mhabek@mef.hr.