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\bibitem{Darwish2011} Darwish, A., Hassanien, A. E, Tan, Q., \& Pal, N. R. (2011). Securing Patients Medical Images and Authentication System Based on Public Key Infrastructure" Advances in Intelligent and Soft Computing. (Vol. 87, pp. 27--34). Soft Computing Models in Industrial and Environmental Applications, 6th International Conference.

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