APA

Smeets R. J. E. M., Wittink H., Hidding A. & Knottnerus J. A. (20060406). Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?. : Spine.

Chicago

Smeets Rob J E M, Wittink Harriët, Hidding Alita and Knottnerus J André. 20060406. Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?. : Spine.

Harvard

Smeets R. J. E. M., Wittink H., Hidding A. and Knottnerus J. A. (20060406). Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?. : Spine.

MLA

Smeets Rob J E M, Wittink Harriët, Hidding Alita and Knottnerus J André. Do patients with chronic low back pain have a lower level of aerobic fitness than healthy controls?: are pain, disability, fear of injury, working status, or level of leisure time activity associated with the difference in aerobic fitness level?. : Spine. 20060406.