1. National Population Projections Tables: Main Series,2023
2. Statistical Brief #103,2010
3. Surgical risk factors, morbidity, and mortality in elderly patients;Turrentine;J Am Coll Surg,2006
4. The changing face of emergency general surgery;Wohlgemut;Ann Surg,2020
5. Organ physiology of aging;Evers;Surg Clin,1994