1. Medical College of Wisconsin , Wauwatosa, WI 53226, United States
2. Division of Quantitative Health Sciences, Medical College of Wisconsin , Wauwatosa, WI 53226, United States
3. Department of Psychology, University of Wisconsin—Milwaukee , Milwaukee, WI 53226, United States
4. Jane B. Pettit Pain and Headache Center, Children’s WI , Wauwatosa, WI 53226, United States
5. Department of Anesthesiology, Medical College of Wisconsin , Wauwatosa, WI 53226, United States
6. Department of Psychology, Marquette University , Milwaukee, WI 53233, United States
7. Departments of Anesthesiology and Pediatrics, Medical College of Wisconsin , Wauwatosa, WI 53226, United States