Ahmad, Mohammad, et al. “Efficacy of Intra-Vitreal Bevacizumab Combined With Phaco-Emulsification in the Prophylaxis of Macular Edema in Patients With Non-Proliferative Diabetic Retinopathy”. Annals of Punjab Medical College, vol. 10, no. 2, Apr. 2016, pp. 58-62, doi:10.29054/apmc/2016.286.