Autosomal recessive ataxias: a new gene - aprataxin - responsible for ataxia-ocular apraxia 1, and a new locus on 9q34 by Moreira, M, Klur, S, Barbot, C, Tachi, N, Bomont, P, Watanabe, M, Shoji, M, Warter, J, Aubourg, P, Durr, A, Nemeth, A, Amouri, R, Hentati, F, Alurkar, A, Divekar, D, Mendoca, P, Sequeiros, J, Coutinho, P, Koenig, M