OFFICE, Editorial. A high chromogranin A: Is it always a tumor?. Turkish Journal of Gastroenterology, [S. l.], v. 24, n. 2, p. 186–187, 2013. DOI: 10.4318/tjg.2013.0462. Disponível em: https://turkjgastroenterol.org/index.php/tjg/article/view/2237. Acesso em: 1 jan. 2026.