does bac water really expire How to Store After Opening Pfizer Hospira Bacteriostatic Water –
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Drugs 16 , 121 (2018)

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The major differences lie in mechanism and efficacy , not in how you administer the medication

Use an insulin syringe (29 to 31 gauge, 0.5 mL or 1 mL)

This may caused by the loss of gastric parietal cells in chronic atrophic gastritis or may result from wide surgical resection of stomach, or from rare hereditary causes of impaired synthesis of intrinsic factor
