Maixner, W., Diatchenko, L., Dubner, R., Fillingim, R. B., Greenspan, J. D., Knott, C., … Slade, G. D. (2011). Orofacial pain prospective evaluation and risk assessment study--the OPPERA study. J Pain, 12(11 Suppl), T4-11.e1-2. https://doi.org/10.1016/j.jpain.2011.08.002

Maixner, William, Luda Diatchenko, Ronald Dubner, Roger B. Fillingim, Joel D. Greenspan, Charles Knott, Richard Ohrbach, Bruce Weir, and Gary D. Slade. “Orofacial pain prospective evaluation and risk assessment study--the OPPERA study.” J Pain 12, no. 11 Suppl (November 2011): T4-11.e1-2. https://doi.org/10.1016/j.jpain.2011.08.002.

Maixner W, Diatchenko L, Dubner R, Fillingim RB, Greenspan JD, Knott C, et al. Orofacial pain prospective evaluation and risk assessment study--the OPPERA study. J Pain. 2011 Nov;12(11 Suppl):T4-11.e1-2.

Maixner, William, et al. “Orofacial pain prospective evaluation and risk assessment study--the OPPERA study.” J Pain, vol. 12, no. 11 Suppl, Nov. 2011, pp. T4-11.e1-2. Pubmed, doi:10.1016/j.jpain.2011.08.002.

Maixner W, Diatchenko L, Dubner R, Fillingim RB, Greenspan JD, Knott C, Ohrbach R, Weir B, Slade GD. Orofacial pain prospective evaluation and risk assessment study--the OPPERA study. J Pain. 2011 Nov;12(11 Suppl):T4-11.e1–2.