Ritesh Katiyar, Ranjit Kumar Nim, Babulal Kannoujia, and Pankaj Mishra. “Occurrence of Microalbuminuria and Hypertensive Retinopathy in Patients With Essential Hypertension”. International Journal of Health and Clinical Research, vol. 4, no. 17, Oct. 2021, pp. 48-50, https://ijhcr.com/index.php/ijhcr/article/view/2761.