1 Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea.
2 Department of Rehabilitation Medicine, Jikei University School of Medicine, Tokyo, Japan.
3 Clinical Neurotechnology Lab, Department of Psychiatry and Neurosciences, Charité-Universitätsmedizin Berlin, Berlin, Germany.
4 Department of Neurorehabilitation Istituti Clinici Scientifici Maugeri, Istituto di Ricovero e Cura a Carattete Scientifico (IRCCS), Pavia, Italy.