Horacio Kaufmann1,2, Jens Jordan3. 1. Department of Neurology, New York University School of Medicine, New York, NY, USA. clinicalautonomicresearch@gmail.com. 2. Clinical Autonomic Research Editorial Office, 530 First Avenue, Suite 9Q, New York, NY, 10016, USA. clinicalautonomicresearch@gmail.com. 3. Institute of Aerospace Medicine, German Aerospace Center, Cologne, Germany.