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Other Factors: Headaches can have many causes
Methods Ethics statement The Ethics Committee (IRB) of Oilfield General Hospital (Daqing City, Heilong Jiang Province, China) recognizes that this systematic review and meta-analysis of de-identified, publicly available data does not constitute human subjects research as defined by relevant national regulations, and therefore does not require Ethics Committee review
Improved dietary adherence may help subjects maintain healthier eating patterns in research models
Intake of vitamin b12 injection overdose can lead to several unpleasant symptoms, which may vary in severity depending on the level of overdose
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