Subject
Psychiatry and Mental health
Reference2 articles.
1. Psychological features in patients with and without irritable bowel syndrome: A case-control study using symptom checklist-90-revised;Farbod;Indian J Psychiatry,2015
2. Wacholder S, McLaughlin JK, Silverman DT, Mandel JS. Selection of controls in case-control studies. I. Principles. Am J Epidemiol 1992;135:1019-28.