Simson, Joshua E, Eduardo Vazquez, John C Dunn, and James H Nelson. “Level II Trauma Centers Have Highest Charges for Hip Fractures”. Journal of Orthopaedic Business 2, no. 1 (January 1, 2022): 4–6. Accessed September 29, 2024. https://jorthobusiness.org/index.php/jorthobusiness/article/view/5.