Shoaib, M., I. Muzammil, Z. A. Bhutta, I. . Yaseen, H. Munir, M. . Ali, M. S. . Younas, S. . Ahmad, and U. . Mahtab. “Pre-Analytical Errors and Rejection Criteria for Blood Samples in Hematology Laboratory”. Journal of Agriculture, Food, Environment and Animal Sciences, vol. 1, no. 1, Dec. 2020, pp. 39-49, https://jafeas.com/index.php/j1/article/view/8.