For citations:
Nodel MR, Yakhno NN. On the heterogeneity of depression in Parkinson’s disease. Nevrologiya, neiropsikhiatriya, psikhosomatika = Neurology, Neuropsychiatry, Psychosomatics. 2020;12(5):46-52. (In Russ.) https://doi.org/10.14412/2074-2711-2020-5-46-52