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2. 2) Nakagawa M: Über die Type der Verzweigung des Aortenbogens. J Juzen Med Soc 1939; 44:243-259 (in Japanese).
3. 3) Fjimoto T, Kato N: A case of the right subclavian artery passing behind the esophagus. Acta Anat Nippon 1963; 38:311-320 (in Japanese).
4. 4) Horiguchi M, Yamada T, Uchiyama Y: A case of retroesophageal right subclavian artery with special reference to the morphology of cardiac nerves. Acta Anat Nippon 1982; 57:1-8 (in Japanese).
5. 5) Umetani T, Ishimoto Y, Yamadori T: A case of the right subclavian artery as the last branch of the aortic arch. Acta Anat Nippon 1983; 58:626-629.