1. Lee KC, Huang YH. To chew carefully and swallow slowly. J Chin Med Assoc. 2019;82(10):745.
2. Lee CY, Kao BZ, Wu CS, Chen MY, Chien HY, Wu LW, et al. Retrospective analysis of endoscopic management of foreign bodies in the upper gastrointestinal tract of adults. J Chin Med Assoc. 2019;82(2):105–9.
3. Lai AT, Chow TL, Lee DT, Kwok SP. Risk factors predicting the development of complications after foreign body ingestion. Br J Surg. 2003;90(12):1531–5.
4. Head JR. The surgical indications in perforation of the esophagus by foreign bodies. Am J Surg. 1938;42(1):266–74.
5. Litovitz TL, Klein-Schwartz W, White S, Cobaugh DJ, Youniss J, Drab A, et al. 1999 annual report of the American Association of poison control centers toxic exposure surveillance system. Am J Emerg Med. 2000;18(5):517–74.