1. Rural residents who are hospitalized in rural and urban hospitals: United States, 2010;Margaret Jean H,;NCHS Data Brief,2014
2. American hospital Association.Challenges Facing Rural Communities and the Roadmap to Ensure Local Access to High‐Quality Affordable Care.2019.
3. Surgical deserts in the U.S.: counties without surgeons;Belsky D;Bull Am Coll Surg,2010