1. CDC Ambulatory and Hospital Care Statistics Branch National Hospital Ambulatory Medical Care Survey: 2011 Emergency Department Summary Tables http://www.cdc.gov/nchs/data/ahcd/nhamcs_emergency/2011_ed_web_tables.pdf
2. Patient Centered Outcomes Research Institute (PCORI) National Priorities and Research Agenda http://www.pcori.org/assets/PCORI-National-Priorities-and-Research-Agenda-2012-05-21-FINAL1.pdf
3. Patient Centered Outcomes Research Institute (PCORI) PCORI Funding Announcement: Treatment of Multiple Sclerosis http://www.pcori.org/sites/default/files/PCORI-PFA-2015-Cycle-3-Multiple-Sclerosis.pdf
4. Patient Centered Outcomes Research Institute (PCORI) Assessment of Prevention, Diagnosis, and Treatment Options - Cycle 2 2015 http://www.pcori.org/funding-opportunities/announcement/assessment-prevention-diagnosis-and-treatment-options-cycle-2
5. The 2013 Model of the Clinical Practice of Emergency Medicine;Counselman;Acad Emerg Med,2014