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Value in Health > 2012 > 15 > 2 > 305-311
Value in Health > 2009 > 12 > 6 > 967-976
Value in Health > 2008 > 11 > 1 > 57-75
Value in Health > 2012 > 15 > 2 > 305-311
Value in Health > 2009 > 12 > 6 > 967-976
Value in Health > 2008 > 11 > 1 > 57-75