van Engelen Baziel G M, Eymard Bruno, Wilcox Douglas
Neuromuscular Centre Nijmegen, Institute of Neurology, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands.
Neuromuscul Disord. 2005 May;15(5):389-94. doi: 10.1016/j.nmd.2005.02.001.