N. B. Palkhiwala, R. P. Patel, R. T. Jani, J. R. Pandya, C. T. Jani, and A. P. Parikh, “Clinical profile of patients presenting with heart failure with preserved ejection fraction”, Int J Res Med Sci, vol. 8, no. 8, pp. 2753–2760, Jul. 2020.