1. Psychological aspects of physical symptoms;Silverman,1968
2. Psychosomatic backache;Sargent;New Eng. J. Med.,1946
3. Emotion and low back pain;Walters;Appl. Ther.,1966
4. Psychologic factors in low-back pain;Brown;New Eng. J. Med.,1954
5. Depression, back pain, and disc protrusion;Levine;Dis. Nerv. Syst.,1971