1. Pain:general considerations;Adams,1980
2. Words of chronic pain;Agnew;Pain,1976
3. Personality studies in patients with pain secondary to organic disease;Bond;J. psychosom. Res.,1973
4. SCL-90: an outpatient psychiatric rating scale —preliminary report;Derogatis;Psychopharmacol. Bull.,1973
5. Brief Symptom Inventory;Derogatis,1978