Elif Tuğba Tuncel, et al. “Prognostic Significance of Hemoglobin Prognostic Nutritional Index and Hemoglobin Red Blood Cell Distribution in Rectal Cancer”. Turkish Journal of Gastroenterology, vol. 34, no. 2, Feb. 2023, pp. 128-34, https://tjg.avesjournals.com/index.php/tjg/article/view/4390.