Undiagnosed Bipolar Disorders in Patients with Major Depressive Episode: Iran’s part of a Multicenter Cross-Sectional Study - Abhari, Seyed Ali Ahmadi; Sadeghi, Majid; Ardestani, Seyed Mehdi Samimi; Semnani, Yousef; Mirsepassi, Gholamreza; Sadr, Seyed Saeed; Kamaloo, Atefe; Ahadi, Morvarid; Pourmirza, Behin; Mir, Elham (Iranian Journal of Psychiatry)