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[1] [2] [7] Deficiency can also be caused by inadequate dietary intake such as with the diets of vegetarians, and vegans, and in the malnourished

Exceptions: IV iron for documented anemia, IV hydration for specific medical reasons, and specialty protocols ordered by a treating physician

(ii) antibiotic use within the past 30 days

Divergent tumor immunity determined by bacteria-cancer cell engagement Nature
