1 Department of Health, Kinesiology & Applied Physiology, Concordia University, Montreal, Quebec, Canada.
2 School of Health, Concordia University, Montreal, Quebec, Canada.
3 Department of Orthopaedic Physiotherapy, Auckland Spine Surgery Centre, Auckland, New Zealand.
4 School of Clinical Sciences, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand.
5 Joint Department of Biomedical Engineering, Marquette University and the Medical College of Wisconsin, Milwaukee, WI, USA.
6 Division of Biokinesiology and Physical Therapy, Keck School of Medicine, University of Southern California, Los Angeles, USA.
7 Department of Orthopaedics, Postgraduate Institute of Medical Education & Research, Chandigarh, India.
8 Department of Anesthesiology and Pain Management, Mount Sinai Hospital, Toronto, Canada.
9 Edinburgh Spinal Surgery Outcome Studies Group, Department of Neurosurgery, Royal Infirmary Edinburgh, UK.
10 Department of Neurosurgery, Leiden University Medical Centre, Leiden, the Netherlands.
11 Department of Public Health and Sports Science, University of Exeter, Exeter, UK.
12 Department of Orthopaedic Surgery, Kuwait Bangladesh Friendship Government Hospital, Dhaka, Bangladesh.
13 National Neurosurgical Centre, Beaumont Hospital, Dublin, Ireland.
14 School of Physiotherapy, Royal College of Surgeons, Ireland.
15 Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
16 Department of Surgery, University of Toronto, Toronto, Canada.
17 Department of Physiotherapy, King's College Hospital NHS Foundation Trust, London, UK.
18 Sydney School of Health Science, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
19 Sydney Spine Institute, Burwood, Sydney, Australia.

No abstract available