Thiếu vitamin D, đi lại khó khăn
(TNO) - Các nhà khoa học thuộc Trung tâm y tế Wake Forest (Mỹ) đã phân tích vitamin và nguy cơ mất hoặc hạn chế khả năng đi lại ở các tình nguyện viên trong 6 năm.
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