“Assessment of the factorial validity and reliability of the ALSFRS-R: a revision of its measurement model” has been published in Journal of Neurology. This work has been supported in part by JPND through the SOPHIA project, selected in the 2011 Biomarkers call, the STRENGTH project, selected in the 2012 Risk Factors call and the ALS-CarE project, selected in the 2012 Healthcare Evaluation call.