Sergey Aleksandrovich Kityan, Mamazoir Akhmedovich Khujamberdiev, Nelly Rafikovna Uzbekova, and Nodira Mukhtarovna Badalbaeva, “SIGNIFICANT PATHOGENETIC FACTORS IN THE DEVELOPMENT OF CHRONIC HEART FAILURE WITH PRESERVED EJECTION FRACTION”, JournalNX, vol. 7, no. 03, pp. 67–72, Mar. 2021.