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He has to have ultrasound on Monday

If you have neurological symptoms (pins and needles, numbness, balance issues), severe fatigue, unexplained weight loss, chest pain, breathlessness, or symptoms that are worsening, you should seek medical assessment promptly.
People with known hypersensitivity to cobalt or cyanocobalamin should not use cyanocobalamin injection unless a clinician has evaluated the risk and chosen an appropriate plan
The assessment criteria for this training program include both observation and a written assessment