Sheikh, A., S. Kumar, Z. Irshad, N. Nusrat, S. Perveen, S. Razzak, and S. Hasan. “Importance Of PLT/MCH Ratio to Differentiate Isolated B12 Deficiency From B12 Deficiency Combined With Other Causes”. Annals of Jinnah Sindh Medical University, Vol. 5, no. 2, Feb. 2020, pp. 77-82, http://104.215.57.51/index.php/AJSMU/article/view/98.