Mikael Tiger, Jonas Svensson, Benny Liberg, Tomoyuki Saijo, Martin Schain, Christer Halldin, Lars Farde, Johan Lundberg. [11 C]raclopride positron emission tomography study of dopamine-D2/3 receptor binding in patients with severe major depressive episodes before and after electroconvulsive therapy and compared to control subjects. Psychiatry and clinical neurosciences. 2020. 74. 4. 263-269