A s far as the funct ion of vasodilatat ion andvasocon st rict ion are concerned, laser therapy, no tto m en t ion it s advan tages, does apparen t ly noharm to arterio sclero sis vessel at least.

 
  • 排中律要求:同一命题或者是真的,或者是假的,没有中间状态可言。
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