BİLEZİKÇİ, Banu, et al. “Systemic Amyloidosis With Gastrointestinal Tract Involvement: Histologic Features of 93 Cases”. Turkish Journal of Gastroenterology, vol. 11, no. 3, Jan. 2000, pp. 244-8, https://turkjgastroenterol.org/index.php/tjg/article/view/1083.