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横山 清七, 藤本 嘉彦, 平川 均, 三富 利夫. "60.卵黄腸管閉存を伴う臍帯ヘルニアの3例(hernia into the umbilical cord)(第21回日本小児外科学会関東甲信越地方会)." Journal of the Japanese Society of Pediatric Surgeons 23.7 (1987) 1319