1. Depression in rheumatological diseases;DeVellis;Ballière's Clinical Rheumatology,1993
2. Depression is not more common in rheumatoid arthritis: a 10-year longitudinal study of 6153 patients with rheumatic disease;Hawley;Journal of Rheumatology,1993
3. Health locus of control, self-help and treatment adherence in relation to ankylosing spondylitis patients;Barlow;Patient Education and Counseling,1993
4. Anxiety and depression in patients with rheumatoid arthritis: a prospective study of 400 patients;Hawley;Journal of Rheumatology,1988
5. A causal analysis of chronic pain and depression;Brown;Journal of Abnormal Psychology,1990