El Abd O, Amadera JED. Low back strain or sprain. In: Frontera WR, Silver JK, Rizzo TD Jr, eds. Essentials of Physical Medicine and Rehabilitation: Musculoskeletal Disorders, Pain, and Rehabilitation. 3rd ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 48.
Goertz M, Thorson D, Bonsell J, et al; Institute for Clinical Systems Improvement. Adult acute and subacute low back pain. Updated November 2012. www.icsi.org/_asset/bjvqrj/LBP.pdf. Accessed August 17, 2015.
Lauerman W, Russo M. Thoracolumbar spine disorders in the adult. In: Miller MD, Thompson SR, eds. DeLee & Drez's Orthopaedic Sports Medicine. 4th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 128.
Malik K, Benzon HT. Low back pain. In: Benzon HT, Rathmell JP, Wu CL, Turk DC, Argoff CE, Hurley RW, eds. Practical Management of Pain. 5th ed. Philadelphia, PA: Elsevier Mosby; 2014:chap 21.
Misulis KE, Murray EL. Lower back and lower limb pain. In: Daroff RB, Jankovic J, Mazziotta JC, Pomeroy SL, eds. Bradley's Neurology in Clinical Practice. 7th ed. Philadelphia, PA: Elsevier; 2016:chap 32.