Arı HF, Anık A, Demir Ş, Çelik SF. Severe myxedema coma and pericardial effusion in a child with Down syndrome: the importance of adherence to levothyroxine therapy. Turk J Pediatr 2024; 66: 369-377. https://doi.org/10.24953/turkjpediatr.2024.4587