b12 injection monthly Injections: Who Should Get Them and How Long Do They Last? Sharon - Vitamin B12 Injection
Description
People who don't get enough of the essential vitamin can experience nausea, fatigue, dizziness or depression among other symptoms
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For each eligible study, two authors (MM and AN) independently extracted data, which was then reviewed by a third author (JV) using a piloted spreadsheet, in accordance with Cochrane Collaboration guidelines ( Where relevant data were missing, attempts were made to contact corresponding authors

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