S. E. Malik, T. Ghaffar, Z. Ullah, S. Kanwal, A. Noor, and azizul H. Aamir, “FREQUENCY OF UNRECOGNISED DIABETIC RETINOPATHY AND NEPHROPATHY IN PATIENTS PRESENTING WITH DIABETIC FOOT ULCERS”, J Postgrad Med Inst, vol. 34, no. 4, Mar. 2021.