Supplemental Material for The Relationship Between an Individual’s Birthday and Admission for Traumatic Injury by Jessica M. Veatch MD, Joel R. Narveson DPT, Ryan W. Walters PhD, Neil D. Patel MD, Viren P. Punja MD, Carlos A. Fernandez MD, Kaily L. Ewing DO, John A. Aucar MD, and Eric J. Kuncir MD in The American Surgeon.