title: April 2017 Letter to the Editor-in-Chief.
abstract: Letter to the Editor-in-Chief of JOSPT as follows: "Subgrouping Patients With Low Back Pain" with Authors' Response J Orthop Sports Phys Ther 2017;47(4):295. doi:10.2519/jospt.2017.0203.
authors.affiliation: 1 Maryville University, St Louis, MO.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Cibulka
authors.affiliation: 2 School of Public Health, Sydney Medical School, The University of Sydney, Sydney, Australia.
authors.forename: Bruno T
authors.initials: BT
authors.lastname: Saragiotto
authors.affiliation: 2 School of Public Health, Sydney Medical School, The University of Sydney, Sydney, Australia.
authors.forename: Chris G
authors.initials: CG
authors.lastname: Maher
authors.affiliation: 3 Faculty of Medicine and Health Sciences, Macquarie University, Sydney, Australia.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Hancock
authors.affiliation: 4 Department of General Practice, Erasmus University Medical Center, Rotterdam, the Netherlands.
authors.forename: Bart W
authors.initials: BW
authors.lastname: Koes
mesh_terms: D006801:Humans; D017116:Low Back Pain