1. Merck manual;TG W,2014
2. Nonpenetrating thoracic injuries;Wilson;Surg Clin North Am,1977
3. Blunt thoracic trauma. Analysis of 515 patients;Shorr;Ann Surg,1987
4. HCUP Nationwide Emergency Department Sample (NEDS). Healthcare Cost and Utilization Project (HCUP). 2006–2014. Agency for Healthcare Research and Quality, Rockville, MD. Available at: www.hcup-us.ahrq.gov/nedsoverview.jsp.
5. HCUP National and Nationwide Inpatient Samples (NIS). Healthcare Cost and Utilization Project (HCUP). 2006–2014. Agency for Healthcare Research and Quality, Rockville, MD. Available at: www.hcup-us.ahrq.gov/nisoverview.jsp.