0
We're unable to sign you in at this time. Please try again in a few minutes.
Retry
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
Retry
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
RSS Email Alerts
Please Wait... Processing your request... Please Wait.

Viewpoint | 
Barry J. Maron, MD; Bo Gregers Winkel, MD, PhD; Jacob Tfelt-Hansen, MD, DMSc
JAMA. 2015;313(1):31-32. doi:10.1001/jama.2014.16253.

The Art of JAMA | 
Carrie A. Butt
JAMA. 2014;312(17):1722-1723. doi:10.1001/jama.2013.279811.

From the JAMA Network | 
Cynthia LaBella, MD
JAMA. 2014;312(7):739-740. doi:10.1001/jama.2014.6668.

News From the Centers for Disease Control and Prevention | 
JAMA. 2014;312(3):224. doi:10.1001/jama.2014.8178.

News From the Centers for Disease Control and Prevention | 
JAMA. 2014;312(3):223. doi:10.1001/jama.2014.8181.

JAMA Patient Page |  FREE
Jill Jin, MD, MPH
JAMA. 2014;312(2):202. doi:10.1001/jama.2013.283011.
Includes: Supplemental Content

JAMA Revisited | 
JAMA. 2014;312(1):99. doi:10.1001/jama.2013.279579.

News From the Centers for Disease Control and Prevention | 
JAMA. 2014;312(1):21. doi:10.1001/jama.2014.7053.

Preliminary Communication |  FREE
Rashmi Singh, PhD; Timothy B. Meier, PhD; Rayus Kuplicki, MS; et al.
JAMA. 2014;311(18):1883-1888. doi:10.1001/jama.2014.3313.
Includes: Supplemental Content

Viewpoint | 
Frederick P. Rivara, MD, MPH; Robert Graham, MD
JAMA. 2014;311(3):239-240. doi:10.1001/jama.2013.282985.

Sign in

Purchase Options

• Subscribe to the journal
• Rent this article ?

A free personal account provides

• Free current issues on The JAMA Network Reader
• Free quizzes on The JAMA Network Challenge
• Commenting and personalized alerts
From The JAMA Network
JAMA Pediatrics
Original Investigation  | 
An Evidence-Based Discussion of Heading the Ball and Concussions in High School Soccer
R. Dawn Comstock, PhD; Dustin W. Currie, MPH; Lauren A. Pierpoint, MS; et al.
JAMA Neurology
Original Investigation  | 
Imaging Correlates of Memory and Concussion History in Retired National Football League Athletes
Jeremy F. Strain, BS; Kyle B. Womack, MD; Nyaz Didehbani, PhD; et al.
JAMA Pediatrics
Original Investigation  | 
Incidence of Concussion During Practice and Games in Youth, High School, and Collegiate American Football Players
Thomas P. Dompier, PhD, ATC; Zachary Y. Kerr, PhD, MPH; Stephen W. Marshall, PhD; et al.
JAMA Pediatrics
Original Investigation  | 
Developmental Trajectories of Physical Activity, Sports, and Television Viewing During Childhood to Young Adulthood Iowa Bone Development Study
Soyang Kwon, PhD; Kathleen F. Janz, EdD; Elena M. Letuchy, MS; et al.