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This may include arranging for refrigeration at destinations, using portable cooling systems, or coordinating with healthcare providers or pharmacies at travel destinations for medication storage if necessary

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Signs and Symptoms of Vitamin B12 Deficiency Vitamin B12 deficiency can have a wide range of symptoms that can affect different parts of the body

Data were normalized based on the recovery of the internal standard

doi: 10.1016/S0304-3940(02)01164-3 15