喉の痛みとともに黒い痰を吐くのはどういう意味でしょうか? - サティシュ・バブ・K博士
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咳で夜眠れない?マンデル医師
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喉に詰まった粘り気のある痰を取り除く方法(ドクター・ジュン著)
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塩がどのように粘液を溶かすのか!マンデル博士
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