Brown JP, Amaechi BT, Bader JD, Shugars D, Vollmer WM, Chen C, Gilbert GH, Esterberg EJ, X-ACT Collaborative Research Group. The dynamic behavior of the early dental caries lesion in caries-active adults and implications. Community Dent Oral Epidemiol. 2015 Jun;43(3):208-16. doi: 10.1111/cdoe.12143
Williams VSL, Wakeford ME. The predictive validity of the National Teacher Examinations for performance in teacher education programs. Educ Psychol Meas. 1993;53(2):533-9. doi: 10.1177/0013164493053002023