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From:
Arch Intern Med. Author manuscript; available in PMC 2012 September 21.
Published in final edited form as:
Arch Intern Med. 2010 January 25; 170(2): 170–178.
doi: 10.1001/archinternmed.2009.494

Figure 1

An external file that holds a picture, illustration, etc.
Object name is nihms2304f1.jpg

CONSORT flow chart.