Boonprasatsook, P. “Hypopharynx Penetration and Soft Tissue Injury after Accidental Swallowing of Sharp Foreign Body: A case report”. Maharat Nakhon Ratchasima Hospital Journal, vol. 27, no. 2, Oct. 2024, pp. 123-6, https://he04.tci-thaijo.org/index.php/MNRHJ/article/view/2146.