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Structurally, the quaternary nitrogen at position 1 carries a permanent positive charge that no change of pH removes
Needleless technology significantly diminishes these events, making the treatment process safer for everyone involved
J Inherit Metab Dis
In addition, a deficiency of vitamin B12 can cause facial signs such as hyperpigmentation (dark spots), vitiligo (white patches where skin loses color), or angular stomatitis (inflammation at the corners of the mouth)
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