1. The University of Western Australia, Crawley, WA, Australia
2. Société Franco‐Européenne de Chiropratique (SOFEC), Villemoble, France
3. Institut Franco‐Européen de Chiropratique, Paris, France
4. Stroke Unit, Department of Neurology, Royal Perth Hospital, Perth Australia; and School of Medicine and Pharmacology, the University of Western Australia, Perth, Australia