Noor Safdar, Huma Batool, Muhammad Waseem, Asifa Karamat, Shazia Awan, and Abdur Rahman Zaheer, “PREDICTING NIV FAILURE IN COPD PATIENTS USING THE SERIAL HACOR SCORE”, J Popl Ther Clin Pharmacol, vol. 32, no. 9, pp. 943–949, Oct. 2025, doi: 10.53555/eax0zk87.