Published Online: May 27, 2013. doi: 10.1001/jamainternmed.2013.6075
Study concept and design: All authors.
Acquisition of data: Gurm.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Larsen and Seth.
Critical revision of the manuscript for important intellectual content: Seth and Gurm.
Statistical analysis: Seth.
Obtained funding: Gurm.
Administrative, technical, and material support: Gurm.
Study supervision: Gurm.
Conflict of Interest Disclosures: None reported.
Funding/Support: The BMC2 registry is funded by Blue Cross Blue Shield of Michigan. Dr Gurm receives research funding from Blue Cross Blue Shield of Michigan, the National Institutes of Health, and the Agency for Healthcare Research and Quality.
Additional Contributions: We are indebted to the study coordinators, investigators, and patients who participated in BMC2.