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Classification of items in beverage vending machines by three provincial nutrient profiling systems (BC, British Columbia; AB, Alberta; NS, Nova Scotia) according to healthfulness (
, most healthy; 
, moderately healthy; 
, least healthy). Beverages (n 618) within vending machines in eighteen recreation and sport facilities in the three Canadian provinces were audited between April and July, 2013; half of the facilities were implementing nutrition guidelines
