A COMPARATIVE STUDY ON SERUM VITAMIN D LEVELS AND INFLUENCING FACTORS AMONG CHILDREN AGED 6-8 YEARS IN HENAN AND GUIZHOU,CHINA
LIU Ting-ting, OU Ling-ling, ZHAO Xia-yu, DONG Wei-hua, HUO Jun-sheng, GONG Zhao-long
Acta Nutrimenta Sinica . 2026, (2): 128 -133 . 

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