Back pain

MLA

National Institute of Arthritis and Musculoskeletal and Skin Diseases (U.S.) and National Institutes of Health (U.S.). Back pain. Bethesda, Maryland : National Institutes of Health

APA

National Institute of Arthritis and Musculoskeletal and Skin Diseases (U.S.) & National Institutes of Health (U.S.). (2000). Back pain. Bethesda, Maryland : National Institutes of Health.

Chicago

National Institute of Arthritis and Musculoskeletal and Skin Diseases (U.S.) and National Institutes of Health (U.S.). Back pain. Bethesda, Maryland : National Institutes of Health