J. Alfeehan, Mohammed, et al. “A Randomized Controlled Study of Autogenous Platelet-Rich Gel and Standard Therapy in the Treatment of Diabetic Refractory Skin Ulcer”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 1, Feb. 2020, pp. 5136-40, https://doi.org/10.61841/qghekt91.