Association Between Serum Zinc Levels and Chronic Constipation in Children. - Ardakani, Abbas Taghavi; Heidari, Mohammad Mahdi; Sharif, Mohammad Reza; Salehi, Mahdi; Gilasi, Hamid Reza; Akbarian, Zeynab; Kheirkhah, Davood (International Archives of Health Sciences, 2025)