Dùng vitamin quá liều cũng gây ung thư
Cập nhật: 07:32 29/05/2015 GMT+7
Một nhóm bác sĩ đã làm một cuộc thử nghiệm trên một nhóm bệnh nhân được dùng 30 milligram beta-carotene và 25.000 IU retinol mỗi ngày.
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