S. Humayun, M. Asif, M. T. Khadim, H. U. Din, F. Ahsan, and F. Rashid, “Concordance and Discordance of Mitotic Count, Ki-67 Proliferative Index and Phosphohistone H3 Count in Grading Neuroendocrine Tumors of Gastrointenstinal Tract”, Pak Armed Forces Med J, vol. 72, no. 3, pp. 845–49, Jun. 2022, doi: 10.51253/pafmj.v72i3.3839.