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Boil fresh, filtered water and let it cool for a few minutes
All studies used balanced populations (inverse probability of treatment weighting or propensity score matching) and accounted for informative censoring (inverse probability of censoring weighting)
NICE Clinical Knowledge Summaries and British Society for Haematology guidelines support B12 supplementation in these clinical contexts, with treatment regimens tailored to the underlying cause
SIBO is responsible for about two-thirds of irritable bowel syndrome (IBS), a condition historically thought not to have a known cause
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