You may claim these if they fall within a 12 month window ending in 2014. You get to define the claim window so as to get the most benefit. Say you incurred expenses in August 2013. You could define a window starting July 2013. But you might then have to defer claiming some 2014 expenses. CRA expects you to track your Medical claims. they do not do it for you. But, you must not claim the same expense twice, it must be eligible. Keep all receipts and statements as CRA may ask for copies.
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