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Y. Tanimura
Hokkaido Univ. Grad. Sch. Dental Medicine
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K. Kumazawa
Hokkaido Univ. Grad. Sch. Dental Medicine
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Y. Totsuka
Hokkaido Univ. Grad. Sch. Dental Medicine
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M. Uo
Hokkaido Univ. Grad. Sch. Dental Medicine
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S. Ohkawa
Hokkaido Univ. Grad. Sch. Dental Medicine
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T. Sugawara
Hokkaido Univ. Grad. Sch. Dental Medicine
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F. Watari
Hokkaido Univ. Grad. Sch. Dental Medicine