OFFICE, Editorial. Unusual retrograde movement of an open safety pin: The second case in the literature. Turkish Journal of Gastroenterology, [S. l.], v. 22, n. 4, p. 447–448, 2011. DOI: 10.4318/tjg.2011.0295. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/1965. Acesso em: 1 jan. 2026.