Soror Inaloo, Seyyed Mohsen Dehghani, Seyyed Mohammad Hashemi, Mojtaba Heydari, Seyyed Taghi Heydari. Comorbidity of headache and functional constipation in children: A cross-sectional survey. Turkish Journal of Gastroenterology [Internet]. 2019 Jul. 25 [cited 2025 Jul. 16];25(5):508-11. Available from: https://tjg.avesjournals.com/index.php/tjg/article/view/3016