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Structural and functional changes of normal aging skin
To apply for a Korean domestic return or exchange, you will bear the cost for the shipping and delivery (items with free Korean domestic delivery benefits: the delivery cost for the round trips) unless the seller is responsible for the item's discrepancy or defect
You may have a deficiency if you are vegan, dont eat enough B12 rich food, or if you have other health conditions which mean you are unable to absorb it properly, such as pernicious anaemia
Certain groups are at a higher risk of B12 deficiency, including the elderly because of reduced absorption due to decreased stomach acid
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