Dogan, E., M. Ozkan, M. Inanc, U. Abdulrezzak, A. Tutus, F. Ozturk, E. Sozuer, G. Can Sezgin, S. Gursoy, A. Yurci, and F. Bayram. “Two Different Characteristics and Prognosis of Grade 3 Gastroenteropancreatic Neuroendocrine Tumors”. Annals of Medical Research, vol. 30, no. 6, June 2023, pp. 666-70, http://www.annalsmedres.org/index.php/aomr/article/view/4449.