This paper is in the following e-collections/theme issues:

Mobile Health (mhealth)  Web-based and Mobile Health Interventions  Research Instruments, Questionnaires, and Tools 

Advertisement: Preregister now for the Medicine 2.0 Congress

Works citing "Comparison of Physical Activity Measures Using Mobile Phone-Based CalFit and Actigraph"

David Donaire-Gonzalez, Audrey de Nazelle, Edmund Seto, Michelle Mendez, Mark J Nieuwenhuijsen, Michael Jerrett
J Med Internet Res 2013 (Jun 13); 15(6):e111 

According to Crossref, the following articles are citing this article (DOI 10.2196/jmir.2470):

(note that this is only a small subset of citations)

1. Mimura K, Kishino H, Karino G, Nitta E, Senoo A, Ikegami K, Kunikata T, Yamanouchi H, Nakamura S, Sato K, Koshiba M. Potential of a smartphone as a stress-free sensor of daily human behaviour. Behavioural Brain Research 2014; [CrossRef]
2. Bort-Roig J, Gilson ND, Puig-Ribera A, Contreras RS, Trost SG. Measuring and Influencing Physical Activity with Smartphone Technology: A Systematic Review. Sports Medicine 2014;44(5):671 [CrossRef]
3. Barrett MA, Humblet O, Hiatt RA, Adler NE. Big Data and Disease Prevention:From Quantified Self to Quantified Communities. Big Data 2013;1(3):168 [CrossRef]