1. Medicaid and CHIP Payment and Access Commission. Medicaid Expansion to the New Adult Group. Available from: https://www.macpac.gov/subtopic/medicaid-expansion/ [last accessed 11 June 2020].
2. Kaiser Family Foundation. Medicaid Expansion Spending and Enrollment in Context: An Early Look at CMS Claims Data for 2014. Available from: https://www.kff.org/medicaid/issue-brief/medicaid-expansion-spending-and-enrollment-in-context-an-early-look-at-cms-claims-data-for-2014/ [last accessed 11 June 2020].
3. Kaiser Family Foundation. Status of State Medicaid Expansion Decisions: Interactive Map. Available from: https://www.kff.org/medicaid/issue-brief/status-of-state-medicaid-expansion-decisions-interactive-map/ [last accessed 11 June 2020].
4. Villarroel MA, Blackwell DL, Jen A. Tables of Summary Health Statistics for U.S. Adults: 2018 National Health Interview Survey. National Center for Health Statistics. 2019. Available from: http://www.cdc.gov/nchs/nhis/SHS/tables.htm] [last accessed 11 June 2020].
5. The Economic Burden of Asthma in the United States, 2008–2013