1. García L, Ballesta B, Rodríguez Talavera J, Morales Orribo N, Carrión A. Urachal pathology: review of cases. Urol Int. 2022;106:195–8. https://doi.org/10.1159/000515648.
2. Fairhurst JJ, Rubin CM, Hyde I, Freeman NV, Williams JD. Bladder capacity in infants. J Pediatr Surg. 1991;26:55–7.
3. Shimokawara I, Yamahata K, Johnishi J, Asaishi K, Kobayashi T, Totsuka M, Narimatsu E. A case of vesico-umbilical fistula combined with hernia into the umbilical cord. J Jpn Soc Pediatr Surg. 1978;14:71–6.
4. Akashi K, Shigemoto H, Fujita W, Nishimoto T, Kataoka N, Takagi K. Congenital urinary umbilical fistula associated with a hernia into the umbilical cord: report of a case. J Jpn Soc Pediatr Surg. 1985;21:1016–21.
5. Takeuchi S, Nakahira M, Nagata N, Shiokawa C, Tamate S, Yamada C, Kadowaki H. Aplasia of urachus associated with hernia into the umbilical cord- report of a case. J Jpn Soc Pediatr Surg. 1972;8:225–9.