Varni, J. W., Stucky, B. D., Thissen, D., DeWitt, E. M., Irwin, D. E., Lai, J., . . . DeWalt, D. A. (2010). PROMIS Pediatric Pain Interference Scale: An Item Response Theory Analysis of the Pediatric Pain Item Bank.

Varni, James W., Brian D. Stucky, David Thissen, Esi Morgan DeWitt, Debra E. Irwin, Jin-Shei Lai, Karin Yeatts, και Darren A. DeWalt. PROMIS Pediatric Pain Interference Scale: An Item Response Theory Analysis of the Pediatric Pain Item Bank. 2010.

Varni, James W., et al. PROMIS Pediatric Pain Interference Scale: An Item Response Theory Analysis of the Pediatric Pain Item Bank. 2010.