Akar, S., I. Harmankaya, and C. Celik. “Prognostic Significance of Tumor Grade in Early-Stage Endometrioid Endometrial Cancer”. Annals of Medical Research, vol. 26, no. 9, May 2021, pp. 1777-81, http://annalsmedres.org/index.php/aomr/article/view/1740.