Limpawittayakul, Piyarat, and Numfon Sinchai. 2019. “Unusual Presentation of Papillary Thyroid Carcinoma Nasopharyngeal Metastasis: Case Report”. The Journal of Chulabhorn Royal Academy 1 (1). Bangkok, Thailand:30-36. https://he02.tci-thaijo.org/index.php/jcra/article/view/215240.