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Yutaka Kimura, Masaaki Yonemoto, Yutaka Ota, Yoko Mizuyoshi, Toshiyuki Nomura, Masahiko Yamamoto, Hirotaka Osafune, Makoto Oda. "Ventilation Tube Therapy for Otitis Media with Effusion in Children." Clinical Otology Japan 17.2 (1990) 52-56