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以上来源于: WordNet
Vitamin D inadequacy was defined as <32 ng/mL, vitamin D insufficiency was defined as 20 to <32 ng/mL, and vitamin D deficiency was defined at <20 ng/mL.
维生素D含量在32ng/mL左右为维生素D缺陷（inadequacy）， 20—32ng/mL为维生素D不足（insufficiency），低于20ng/mL为维生素D缺乏（deficiency）。
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