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美国波士顿一位医学博士,用16岁~75岁的300名试验者——白发者,采用维生素B对氨苯甲酸服用,结果在五周内白发
Boston, USA, a medical doctor, with 16-year-old to 75-year-old trial of 300 people - white hair, the use of vitamin B to take ammonia benzoic acid, the results within five weeks of white hair