title: Response to Letter by Dr. Malanga.
authors.affiliation: Department of Physical Medicine and Rehabilitation, Rehabilitation Institute of Chicago/Northwestern University, Feinberg School of Medicine, Chicago, IL, USA.
authors.forename: Monica
authors.initials: M
authors.lastname: Rho
authors.affiliation: Department of Neurology, Division of Physical Medicine and Rehabilitation, Washington University School of Medicine, St. Louis, MO, USA.
authors.forename: Alejandra
authors.initials: A
authors.lastname: Camacho-Soto
authors.affiliation: Department of Physical Medicine and Rehabilitation, Rehabilitation Institute of Chicago/Northwestern University, Feinberg School of Medicine, Chicago, IL, USA.
authors.forename: Abby
authors.initials: A
authors.lastname: Cheng
mesh_terms: D000368:Aged; D006801:Humans; D017116:Low Back Pain; D013848:Thigh