Zabeen, F. ., Mohsin, F. ., Jesmin, E. ., Mahbuba, S. ., & Hassan, M. Q. . (2021). Comorbidities in children with Down syndrome: experience in a tertiary care hospital of Bangladesh. BIRDEM Medical Journal, 11(3), 191–196. https://doi.org/10.3329/birdem.v11i3.55219