[1] Univ Appl Sci & Arts Southern Switzerland SUPSI, Dept Business Hlth & Social Care, Manno, Switzerland
[2] Hosp San Raffaele, Rehabil Dept, I-20132 Milan, Italy
[3] Univ Hosp Gottingen, Ctr Anesthesiol Emergency & Intens Care Med, Pain Clin, Gottingen, Germany
[4] Univ Gottingen, Univ Med Ctr Gottingen, Bernstein Ctr Computat Neurosci, Dept Neurorehabil Engn,Bernstein Focus Neurotechn, D-37073 Gottingen, Germany