?stergaard SD, Pedersen CH, Uggerby P, Munk-J?rgensen P, Rothschild AJ, Larsen JI, G?tzsche C, S?ndergaard MG, Bille AG, Bolwig TG, Larsen JK, Bech P. Clinical and psychometric validation of the psychotic depression assessment scale. J Affect Disord. 2015 Mar 01; 173:261-8.