Martucci KT, Shirer WR, Bagarinao E, Johnson KA, Farmer MA, Labus JS, Apkarian AV, Deutsch G, Harris RE, Mayer EA, Clauw DJ, Greicius MD, Mackey SC. Pain. 2015 Sep;156(9):1755-1764. doi: 10.1097/j.pain.0000000000000238. [PMID: 26010458] [PMC4545714]