Havekamp L.J., Appel V., et al., 1995
Havekamp L.J., Appel V., Appel S.H. Natural history of amyotrophic lateral sclerosis in a database population Brain 1995. 118, 707-719.
Havekamp L.J., Appel V., Appel S.H. Natural history of amyotrophic lateral sclerosis in a database population Brain 1995. 118, 707-719.
