Demirbaş F, Çaltepe G, Abbasguliyev H, Kalaycı AG. Fecal calprotectin levels used as a noninvasive method for screening for chronic gastritis in pediatric patients. A descriptive study. Sao Paulo Med J [Internet]. 2021 Nov. 4 [cited 2025 Mar. 10];139(6):564-9. Available from: https://periodicosapm.emnuvens.com.br/spmj/article/view/544