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Original Investigation | 
Mark A. Espeland, PhD; Sally A. Shumaker, PhD; Iris Leng, PhD, MD; et al.
JAMA Intern Med. 2013;173(15):1429-1436. doi:10.1001/jamainternmed.2013.7727.

Invited Commentary | 
Francine Grodstein, ScD
JAMA Intern Med. 2013;173(15):1437-1438. doi:10.1001/jamainternmed.2013.6827.

Invited Commentary | 
Eric Widera, MD
JAMA Intern Med. 2013;173(9):761-762. doi:10.1001/jamainternmed.2013.3801.

Original Investigation |  FREE
Sarah D. Berry, MD, MPH; Yoojin Lee, MS, MPH; Shubing Cai, PhD; et al.
JAMA Intern Med. 2013;173(9):754-761. doi:10.1001/jamainternmed.2013.3795.

Research Letters |  FREE
Lindsay S. Nagamatsu, MA; Todd C. Handy, PhD; C. Liang Hsu, BSc; et al.
Arch Intern Med. 2012;172(8):666-668. doi:10.1001/archinternmed.2012.379.

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