Correia, A., A. Gonçalves, L. Menezes Falcão, and L. Ravara. “Apathetic Thyrotoxicosis – a Rare Diagnosis”. Internal Medicine, vol. 12, no. 1, Mar. 2005, pp. 15-21, https://revista.spmi.pt/index.php/rpmi/article/view/1670.