1. Fay W Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
2. College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
3. Institute for Medicaid Innovation, Washington, District of Columbia, USA.
4. Department of Obstetrics and Gynecology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
5. College of Medicine, University of Arkansas for Medical Sciences Northwest, Springdale, Arkansas, USA.