1. El Escorial revisited: revised criteria for the diagnosis of amyotrophic lateral sclerosis;Brooks;Amyotroph Lateral Scler Other Motor Neuron Disord,2000
2. Reliability and factorial structure of a rating scale for amyotrophic lateral sclerosis;Oda;No To Shinkei,1996
3. Study of functional rating scale for amyotrophic lateral sclerosis: revised ALSFRS(ALSFRS-R) Japanese version;Ohashi;No To Shinkei,2001
4. Minister’s Secretariat Ministry of Health, Labour and Welfare. White papers & reports: Annual health, labour and welfare, Report 2008–2009. Tokyo; Ministry of Health, Labour and Welfare; 2009.
5. The diagnostic process in ALS;Pongratz;J Neurol Sci,1999