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Invited Commentary | 
Donna M. Polk, MD, MPH; Patrick T. O’Gara, MD
JAMA Intern Med. 2015;175(10):1702-1703. doi:10.1001/jamainternmed.2015.3827.

Research Letter | 
Jacob A. Doll, MD; Anne Hellkamp, MS; P. Michael Ho, MD, PhD; et al.
JAMA Intern Med. 2015;175(10):1700-1702. doi:10.1001/jamainternmed.2015.3819.

Challenges in Clinical Electrocardiography | 
Ali Pourdjabbar, MD; Martin S. Green, MD; Pablo B. Nery, MD
JAMA Intern Med. 2015;175(10):1695-1697. doi:10.1001/jamainternmed.2015.3989.

Original Investigation | 
Rohan Khera, MD; Peter Cram, MD, MBA; Xin Lu, MS; et al.
JAMA Intern Med. 2015;175(6):941-950. doi:10.1001/jamainternmed.2014.7856.
Includes: Supplemental Content

Original Investigation | 
Yousif Ahmad, MRCP; Sayan Sen, PhD; Matthew J. Shun-Shin, MRCP; et al.
JAMA Intern Med. 2015;175(6):931-939. doi:10.1001/jamainternmed.2015.0569.
Includes: Supplemental Content

Challenges in Clinical Electrocardiography | 
Brooks M. Walsh, MD; Rehan Karim; Stephen W. Smith, MD
JAMA Intern Med. 2015;175(6):1053-1055. doi:10.1001/jamainternmed.2015.0515.

Original Investigation | 
Frederika A. van Nimwegen, MSc; Michael Schaapveld, PhD; Cécile P. M. Janus, MD; et al.
JAMA Intern Med. 2015;175(6):1007-1017. doi:10.1001/jamainternmed.2015.1180.
Includes: Supplemental Content

Research Letter | 
Robert W. Yeh, MD, MSc; Laura Mauri, MD, MSc; Robert E. Wolf, MS; et al.
JAMA Intern Med. 2015;175(3):454-456. doi:10.1001/jamainternmed.2014.7129.

Original Investigation | 
Andrew J. Foy, MD; Guodong Liu, PhD; William R. Davidson Jr, MD; et al.
JAMA Intern Med. 2015;175(3):428-436. doi:10.1001/jamainternmed.2014.7657.
Includes: CME

Invited Commentary | 
Marc J. Claeys, MD, PhD
JAMA Intern Med. 2015;175(2):216-217. doi:10.1001/jamainternmed.2014.6586.

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