1. 1) Onoda S, Kouzu T, Okuyama K, Tohnos N, Soeda K, Koide Y, Isono K. Benefits and risks associated with dissection of three regional lymph nodes in thoracic csophageal carcinoma. J Jpn Surg Soc, 89: 1619-1622, 1989, (Japanese)
2. 2) Kuwano H, Tsutsui S, Nagamatsu M, Oono S, Matsuda H, Mori M, sugimachi K. Clinical evaluation of systematic lymph node dissection for the intrathoracic esophageal carcinoma. J Jpn Surg Soc, 90: 1609-1611, 1990, (Japanese)
3. 3) Isono K, Sato H, Nakayama K. Results of a Nationwide Study on the three-field lymph node dissection of esophageal cancer. Oncology, 48: 411-420, 1991.
4. 4) Parker EF, Gregorie HB. Carcinoma of the esophagus long-term results. JAMA, 235: 1018-1020, 1976.
5. 5) Goodner JT. Surgical and radiation treatment of cancer of the thoracic esophagus, Am J Roentgenol, 523-528, 1969.