R. Thapa, S. Bajimaya, S. Sharma, B. B. Rai, and G. Paudyal, “Systemic association of newly diagnosed proliferative diabetic retinopathy among type 2 diabetes patients presented at a tertiary eye hospital of Nepal”, Nep J Oph, vol. 7, no. 1, pp. 26–32, Sep. 2015.