1. School of Life and Health Sciences, Aston Brain Centre; Aston University; Birmingham UK
2. Regional Neuromuscular Clinic, Queen Elizabeth Hospital; University Hospitals of Birmingham; Birmingham UK
3. Reference Centre for Neuromuscular Diseases and ALS; Centre Hospitalier Universitaire La Timone; Marseille France
4. Centre de Référence Maladies Neuromusculaires de l'Enfant et de l'Adulte Nantes-Angers; Centre Hospitalier Universitaire d'Angers; Angers France