1. National Board of Medical Examiners. Examinee Support Services Web site. https://www.nbme.org/health-profession-services/ESS.html. Updated December 11, 2018. Accessed October 23,2019.
2. Joint Commission on National Dental Examinations. National Board Dental Examination (NBDE) Part I 2019 Guide. https://www.ada.org/∼/media/JCNDE/pdfs/2019_NBDE_PartI_Guide.pdf?la=en. 2019. Cited October 23,2019.
3. National Board of Osteopathic Medical Examiners. COMPLEX-USA: The pathway to osteopathic medical practice and licensure in the United States Web site. https://www.nbome.org/exams-assessments/comlex-usa/2019. Accessed October 23,2019.
4. Item response theory: applications of modern test theory in medical education;Downing;Med Educ,2003
5. Item response theory models and testing practices: current international status and future directions;Hambleton;Eur J Psychol Assess,1997