"비타민d 부족하면 알레르기 비염 위험 증가" / Ytn
Synopsis
[YTN 기사원문] http://www.ytn.co.kr/_ln/0103_201309251334354495 [앵커] 비타민D가 뼈 성장에 필수적인 영양소라는 건 잘 알고 ...
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