title: Reply to the letter to the editor regarding "A clinical prediction model to assess surgical outcome in patients with cervical spondylotic myelopathy: internal and external validation using the prospective multicenter AOSpine North American and International datasets of 743 patients." Spine J 2015;15:388-397.
authors.affiliation: Toronto Western Hospital, University Health Network, 399 Bathurst St, Rm 4W-449, Toronto, Ontario, Canada M5T 2S8.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Fehlings
authors.affiliation: Toronto Western Hospital, University of Toronto, University Health Network, Rm 4F-412, 399 Bathurst St, Toronto, Ontario, Canada M5T2S8.
authors.forename: Lindsay
authors.initials: L
authors.lastname: Tetreault
authors.affiliation: Faculty of Health Sciences, University of Ontario Institute of Technology (UOIT), UOIT-CMCC Centre for the Study of Disability Prevention and Rehabilitation, Science Building, Room 2031, 2000 Simcoe Street North, Oshawa, Ontario, Canada, L1H 7K4.
authors.forename: Pierre
authors.initials: P
authors.lastname: Côté
authors.affiliation: Department of Neurosurgery, University of Kansas, 3901 Rainbow Blvd Ms3021, Kansas City, KS 66160, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Arnold
authors.affiliation: Department of Health Services, University of Washington, 4333 Brooklyn Avenue NE, Rm 14-315, Seattle, WA 98195-9455, USA.
authors.forename: Branko
authors.initials: B
authors.lastname: Kopjar