Raja Muhammad Taimoor Khan, Haroon Saleem, Shahid Anwar Bhatti, Muhammad Usman Sadiq, Muhammad Irfan Sadiq. “Association of Severity of Diabetic Retinopathy With Levels of HbA1c”. Pakistan Journal of Medical & Health Sciences, vol. 16, no. 07, Sept. 2022, p. 790, doi:10.53350/pjmhs22167790.