P, V., and B. Rao N. “KNOWLEDGE, ATTITUDE & PRACTICE PATTERN OF DIABETIC RETINOPATHY AMONG DIABETOLOGISTS OF VISAKHAPATNAM DISTRICT -A STUDY”. International Journal of Clinical and Biomedical Research, vol. 1, no. 3, July 2015, pp. 5-10, https://ijcbr.com/index.php/ijcbr/article/view/68.