Vidhiyasagaran J, Pallavi Kulkarni,  James P.T, and Manimekalai K, “ECHOCARDIOGRAPHIC FINDINGS AND ITS CORRELATION WITH THE SEVERITY OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN A TERTIARY CARE HOSPITAL AT NORTH KERALA: A CROSS-SECTIONAL STUDY”, J Popl Ther Clin Pharmacol, vol. 32, no. 1, pp. 1059–1067, Feb. 2025, doi: 10.53555/m71avz12.