Clinical Characteristics of Pars Tensa Cholesteatoma: A Comparative Study of Area-Based Classification Systems Proposed by the Japanese Otological Society and the European Academy... oleh Masaomi Motegi, Yutaka Yamamoto, Takeshi Tada, Masahiro Takahashi, Sayaka Sampei, Hiromi Sano, Tsunetaro Morino, Manabu Komori, Masahiro Miura, Kazuhisa Yamamoto, Yuichiro Yaguchi, Yuika Sakurai, Hiromi Kojima