@article{Hemming:340114,
      recid = {340114},
      author = {Hemming, Karla and Girling, Alan},
      title = {A menu-driven facility for power and detectable-difference  calculations in stepped-wedge cluster-randomized trials,  erratum},
      journal = {Stata Journal},
      address = {2016-01},
      number = {199-2024-496},
      year = {2016},
      url = {http://ageconsearch.umn.edu/record/340114},
      doi = {https://doi.org/10.22004/ag.econ.340114},
}