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本站是我在加州大学洛杉矶分校（UCLA）医学院上四年级时设计的， 目的是为帮助医学专业二年级的学生理解心脏杂音和呼吸音的声音特点。请点击上方的按键来浏览大致的类别，点击屏幕左边的文档浏览每个领域的具体题目。

                                                                          --克里斯

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