Kalatsei, Liudmila, D. M. N. P. K. Dassanayake, and Naveen D. K. N. Direcksze. 2026. “Clinical and Echocardiographic Features of Patients With Single-Chamber and Dual-Chamber Pacemakers”. International Journal of Research in Medical Sciences 14 (4):1324-28. https://doi.org/10.18203/2320-6012.ijrms20260936.