![Health locus of control beliefs and psychological distress as predictors for treatment outcome in low-back pain patients: results of a 3-month follow-up of a controlled intervention study]()
Health locus of control beliefs and psychological distress as predictors for treatment outcome in low-back pain patients: results of a 3-month follow-up of a controlled intervention studyHärkäpää, Kristiina; Järvikoski, Aila; Mellin, Guy; Hurri, Heikki; Luoma, Jarmo · 1991