@article{pittir24654,
          volume = {104},
          number = {1},
           month = {January},
           title = {Kumar et al. respond},
          author = {S Kumar and JJ Grefenstette and D Galloway and SM Albert and DS Burke},
            year = {2014},
         journal = {American Journal of Public Health},
             url = {http://d-scholarship-dev.library.pitt.edu/24654/}
}