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. Author manuscript; available in PMC: 2008 Nov 20.
Published in final edited form as: Ann Intern Med. 2006 Nov 21;145(10):727–738. doi: 10.7326/0003-4819-145-10-200611210-00005

Figure. Study flow diagram.

Figure

*See Appendix Table 1 (available at www.annals.org) for reasons for ineligibility.

†See Appendix Table 2 (available at www.annals.org) for reasons for unavailable end points and types of 6-month follow-up.