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Continue to Chat30 min of sunbath a week can make infants’ vitamin-D sufficient https://innohealthmagazine.com/2018/innovation/sunbath-infants-vitamin-d-sufficient/
30 min of sunbath a week can make infants’ vitamin-D sufficient https://innohealthmagazine.com/2018/innovation/sunbath-infants-vitamin-d-sufficient/