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Naoki Yanagisawa
Department of Infectious Diseases, Tokyo Metropolitan Komagome Hospital, Japan
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Tomoyuki Arai
Department of Otorhinolaryngology, Tokyo Metropolitan Komagome Hospital, Japan
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Nobuo Motegi
Department of Dental and Oral Surgery, Tokyo Metropolitan Komagome Hospital, Japan
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Atsushi Ajisawa
Department of Infectious Diseases, Tokyo Metropolitan Komagome Hospital, Japan