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National Yang Ming University, Taiwan, R.O.C.,
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M.D., Taipei Medical University, Taiwan, R.O.C.,
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Clinical investigator, Voice Center,Massachusetts General Hospital, Boston, MA, U.S.A.,
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Clinical investigator, Massachusetts Eye and Ear Infirmary, Boston, MA, U.S.A.,
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Clinical investigator, Harvard Medical School, Boston,MA, U.S.A.,