Please clarify: Are you in respiratory distress? Do you wish to do this as part of a calm technique? Do you hyperventilate? If you can put this into context we will try to help. Please clarify and re-ask question.
Answered 12/27/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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