Bhatti, Khalid Munir, Basem Hamzah, Shafiq Rehman, Emily Birkett, Wren Langford, Myat Aung, and Ruben Canelo. “NOVEL USE OF AGE-ADJUSTED CHARLSON COMORBIDITY INDEX (ACCI) AS A RISK STRATIFICATION TOOL FOR DEVELOPMENT OF POSTOPERATIVE SARS-COV-2 INFECTION IN SURGICAL PATIENTS”. Journal of Ayub Medical College Abbottabad 33, no. 4 (October 6, 2021): 622–627. Accessed April 3, 2025. https://jamc.ayubmed.edu.pk/index.php/jamc/article/view/8809.