Correction to: European Journal of Human Genetics advance online publication, 24 February 2010; doi:10.1038/ejhg.2010.8

Since the publication of the above paper the authors realized that the other co-authors who took part to the EMQN Best Practice Meeting and electronic discussion were not indexed as such. Their name and affiliations are listed below.

Giunti Paola: Department of Molecular Neuroscience, Institute of Neurology, University College of London, London, UK

Kämäräinen Outi: European Molecular Genetics Quality Network, St Mary's Hospital, Hathersage Road, Manchester, UK

Volpini Victor: Center for Molecular Genetic Diagnosis of Hereditary Diseases, Biomedical Research, Institute of Bellvitge, IDIBELL, Barcelona, Spain

Weirich Helga: Department of Medical Genetics, Medical University of Innsbruck, Schöpfgasse 41, Innsbruck, Austria

Christodoulou Kyproula: The Cyprus Institute of Neurology and Genetics, Nicosia, Cyprus

Bazak Nazli: Bogazici University, Deptartment of Molecular Biology and Genetics, Neurodegeneration Research Laboratory, Istanbul, Turkey

Sinke Richard: UMC Utrecht, Department of Medical Genetics, Utrecht, The Netherlands

Sulek-Piatkowska Anna: Department of Genetics, Institute of Psychiatry and Neurology, Sobieskiego 9, Warsaw, Poland

Garcia-Planells Javier: Instituto Valenciano de Genetica (IVGEN), Valencia, Spain

Davis Mark: Neurogenetics Unit, Department of Anatomical Pathology, Royal Perth Hospital, Perth, Australia

Frontali Marina: INMM-CNR, Rome, Italy

Hämäläinen Petra: Department of Medical Biochemistry and Genetics, University of Turku, Turku, Finland

Wieczorek Stefan: Ruhr-University, Human Genetics, Bochum, Germany

Zühlke Christine: Institut für Humangenetik, Universität Lübeck, Lübeck, Germany

Saraiva-Pereira Maria-Luiza: Servico de Genetica Medica, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil

Warner Jon: Molecular Genetics Service Edinburgh, Western General Hospital, Edinburgh, UK

Leguern Eric: UF de Neurogénétique Fédération de Génétique, Groupe Hospitalier Pitié-Salpêtrière, Paris Cedex 13, France

Thonney Francine: Service de génétique médicale, CHUV, Lausanne, Switzerland

Quintáns Castro Beatriz: Fundación Pública Galega de Medicina Xenómica, Hospital Clínico Universitario, Santiago de Compostela (La Coruna), Spain

Jonasson Jenni: Clinical Genetics, Laboratory Medicine, University Hospital of Umea, Umea, Sweden

Storm Katrien: Center of Medical Genetics, University Hospital of Antwerp, Antwerp, Belgium

Andersson Anna: Department of Clinical Genetics, Lund University Hospital, Lund, Sweden

Ravani Anna: Genetica Medica, Universitá di Ferrara, Ferrara, Italy

Correia Luís, Silveira Isabel, Alonso Isabel, Martins Carla, Pinto Basto Jorge, Coutinho Paula, Perdigão Andreia: UnIGENe, IBMC, University of Porto, Porto, Portugal

Barton David: National Centre for Medical Genetics, Our Lady's Children Hospital, Dublin, Ireland

Davis Mary: Neurogenetics Unit, National Hospital for Neurology and Neurosurgery, London, UK