Response to Keriel-Gascou et al.: higher efficiency and other alleged advantages are not inherent to the stepped wedge design.

@article{Viechtbauer2014ResponseTK,
  title={Response to Keriel-Gascou et al.: higher efficiency and other alleged advantages are not inherent to the stepped wedge design.},
  author={Wolfgang Viechtbauer and Daniel Kotz and Mark Spigt and Ilja C. W. Arts and Rik Crutzen},
  journal={Journal of clinical epidemiology},
  year={2014},
  volume={67 7},
  pages={834-6}
}