The inventory of depressive symptomatology (IDS): validity and reliability of clinician (IDS-C30) and self-report form (IDS-SR30) in patients with major depressive disorder
Selçuk Aslan, Aslı Çepik, Sedat Işıklı, Augustus Rush, Ender Taner, Erdal Işık
( Psychiatry and Clinical Psychopharmacology 2006; 16: 1-14)