Howick, J., Bishop, F., Heneghan, C., Wolstenholme, J., Stevens, S., Hobbs, R., & Lewith, G. (2013). Placebo use in the United kingdom: Results from a national survey of primary care practitioners. Public Library of Science.

Howick, J., F. Bishop, C. Heneghan, J. Wolstenholme, S. Stevens, R. Hobbs, and G. Lewith. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.

Howick, J., et al. Placebo Use in the United Kingdom: Results from a National Survey of Primary Care Practitioners. Public Library of Science, 2013.