1. 1. Iwanaga J, Saga T, Tabira Y, Watanabe K, and Yamaki K. A case of horseshoe kidney with surplus renal arteries found in a student course of gross anatomy dissection. J Kurume Med Assoc 2014; 77:57-62. (in Japanese)
2. 2. O’Brien J, Buckley O, Doody O, Ward E, Persaud T et al. Imaging ofhorseshoe kidneys and their complications. J Med Imag Radiat On 2008; 52:216-226.
3. 3. Umezue Y. Two cases of horseshoe kidney. Kyusyuisenkai Zasshi 1942; 7:25-34. (in Japanese)
4. 4. Takeshige Y, Takaoka C, Yasunari T, and Abiru M. A case of horseshoe kidney. J Kurume Med Assoc 1966; 29:540- 549. (in Japanese)
5. 5. Nagashima S, Tanaka I, Yamaki K, Hiromatsu S, Hiranuma S et al. A case of the horseshoe kidney. J Kurume Med Assoc 1990; 53:1046-1053. (in Japanese)