Fitbit®: An accurate and reliable device for wireless physical activity tracking.

@article{Diaz2015FitbitAA,
  title={Fitbit®: An accurate and reliable device for wireless physical activity tracking.},
  author={Keith M. Diaz and David J. Krupka and Melinda J. Chang and James W Peacock and Yao Ma and Jeff Goldsmith and Joseph E. Schwartz and Karina W. Davidson},
  journal={International journal of cardiology},
  year={2015},
  volume={185},
  pages={138-40}
}
Keith M. Diaz1, David J. Krupka1, Melinda J Chang1, James Peacock1, Yao Ma2, Jeff Goldsmith2, Joseph E. Schwartz1, and Karina W. Davidson1 1Center for Behavioral Cardiovascular Health, Department of Medicine, Columbia University Medical Center, New York, NY. This author takes responsibility for all aspects of the reliability and freedom from bias of the data presented and their discussed interpretation