Atif, K. and Ullah Khan, ,Habib 2017. FREQUENCY OF DEPRESSION AND ANXIETY AMONG PATIENTS WITH CHRONIC SCIATICA; UNSCREENED AND UNDIAGNOSED CASES MAY REPRESENT AN ICEBERG PHENOMENON: Depression And Anxiety Among Patients With Chronic Sciatica. Pakistan Armed Forces Medical Journal. 67, 5 (Oct. 2017), 819–24.