1 PRM Department, Paris Diderot university, GH Saint Louis - Lariboisière - F. Widal, 200, rue faubourg St Denis, 75010 Paris, France. Electronic address: alain.yelnik@aphp.fr.
2 PRM Department, Montpellier university hospital, Euromov, IFRH, 34000 Montpellier, France.
3 PRM Department, Versailles St Quentin university, R. Poincaré hospital, 92380 Garches, France.
4 Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center McGovern Medical School, and TIRR Memorial Hermann Hospital, 1333 Moursund St., 77030 Houston, Texas, USA.