Constant-severe pain in chronic pancreatitis is associated with genetic loci for major depression in the NAPS2 cohort

Ellyn Dunbar, Phil J. Greer, Nadine Melhem, Samer Alkaade, Stephen T. Amann, Randall E. Brand, Gregory A. Coté, Christopher E. Forsmark, Timothy B. Gardner, Andrés Gelrud, Nalini M. Guda, Jessica LaRusch, Michele D. Lewis, Jorge D. Machicado, Thiruvengadam Muniraj, Georgios I. Papachristou, Joseph Romagnuolo, Bimaljit S. Sandhu, Stuart Sherman, C. Mel Wilcox, Vikesh K. Singh, Dhiraj Yadav, David C. Whitcomb, For the NAPS2 study group