Muhammad Asif, Muhammad Waqas, Hira Razzaq, Saud Javed Choudhry, Nahal Arshad, Nouman Nazeer. “NT PROBNP’S Prognostic Value Among Patients of Covid-19 Without Heart Failure”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 02, July 2022, p. 1254, doi:10.53350/pjmhs221621254.