Authors: Ettore Beghi; Adriano Chiò; Philippe Couratier; Jesùs Esteban; Orla Hardiman; Giancarlo Logroscino; Andrea Millul; Douglas Mitchell; Pierre-Marie Preux; Elisabetta Pupillo; Zorica Stevic; Robert Swingler; Bryan J Traynor; Leonard H Van den Berg; Jan H Veldink; Stefano Zoccolella Journal: Amyotroph Lateral Scler Date: 2010-08-11