o’g’li, Jamoldinov Diyorbek Maxmudjon. “Results of Surgical Treatment of Acquired Heart Defects in Elderly Patients: Risk Factors, Prognosis”. International Journal of Discoveries and Innovations in Applied Sciences 2, no. 8 (August 30, 2022): 21–25. Accessed October 26, 2025. https://oajournals.net/index.php/ijdias/article/view/1555.