1. Deaths: final data for 2014;KD Kochanek;Natl Vital Stat Rep,2016
2. Torio CM, Moore BJ. National inpatient hospital costs: the most expensive conditions by payer, 2013 (HCUP Statistical Brief #204). May 2016 [cited 20 November 2017]. Available from: https://www.hcup-us.ahrq.gov/reports/statbriefs/sb204-Most-Expensive-Hospital-Conditions.jsp
3. Pfuntner A, Wier LM, Stocks C. Statistical Brief #162: most frequent conditions in U.S. hospitals, 2011. September 2013 [cited 2 October 2017]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK169248/pdf/Bookshelf_NBK169248.pdf
4. Trends in pneumonia mortality rates and hospitalizations by organism, United States, 2002–2011;BA Wuerth;Emerg Infect Dis,2016
5. Microbial etiologies of hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia;RN Jones;Clin Infect Dis,2010