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Articles added consecutively to current annual volume.
Does not have issue numbers, each volume corresponds to a calendar year.
Description based on: 1:1 (21 Oct. 2009); title from homepage (BioMed Central Web site, viewed Nov. 9, 2009).
Latest issue consulted: 8:9 (7 Dec. 2016) (viewed Jan. 1, 2017).
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