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1 Vitamin D intake, Outdoor Activity Time and Serum 25-OH Vitamin D Concentrations of Korean Postmenopausal Women by Season and by Age
Jin-Sook Yoon, Min-Kyoung Song
Korean J Community Nutr.2015;20(2):120-128.   Published online 2015 April 30     DOI: http://dx.doi.org/10.5720/kjcn.2015.20.2.120
      

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