van Staden, Werdie C W Conceptual issues in undifferentiated somatoform disorder and chronic fatigue syndrome. [electronic resource] - Current opinion in psychiatry Nov 2006 - 613-8 p. digital Publication Type: Journal Article; Review ISSN: 0951-7367 Standard No.: 10.1097/01.yco.0000245753.83502.d9 doi Subjects--Topical Terms: Diagnosis, DifferentialFatigue--etiologyFatigue Syndrome, Chronic--diagnosisHumansSomatoform Disorders--diagnosis