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医药科技

        maidism,is a disease causedby deficiency of vitamine B complex,spe cially niacin. It is characterized by dermitis,glossitis,diarrhea and cerebromyelic or peripheral nerve degeneration. Defi ciency of niacin may be caused by malnutrition,absorbing dysfunct......（本文共 313 字）     [阅读本文] >>