a MossRehab & Albert Einstein Medical Center, 60 Township Line Rd., Elkins Park, PA 19027, USA
b Istituto Nazionale Neurologico Carlo Besta, Università Cattolica del Sacro Cuore, Fondazione IRCCS Istituto Neurologico Carlo Besta,Via G. Celoria, 1120133 Milano, MI, Italy
c Oakland University, William Beaumont School of Medicine, Department of Urology, William Beaumont Hospital, 3535 W.13 Mile Rd. #404, Royal Oak, MI 48073, USA
d Salt Lake City, UT, USA
e 10 West 66 Street, New York, NY 10023, USA
f Clinical Neurophysiology Laboratories, Neuromuscular Division, Neuro-AIDS Program, Mount Sinai Medical Center,One Gustave Levy Place, Box 1052, New York, NY 10029, USA
g Scott Department of Urology, Baylor College of Medicine, 6620 Main Street, Suite 1325, Houston, TX 77030, USA
h North Staffordshire Rehabilitation Centre, Haywood Hospital/University Hospital on North Staffordshire, Hartshill Rd.,Stoke on Trent ST4 7PA, United Kingdom