For citations:
Tappakhov A.A., Nikolaeva T.Ya., Popova T.E., Shnayder N.A. Difficulties in diagnosing atypical variants of Alzheimer’s disease. Russian neurological journal. 2021;26(5):16-23. (In Russ.) https://doi.org/10.30629/2658-7947-2021-26-5-16-23