1 Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA cmeernik@email.unc.edu.
2 North Carolina Jaycee Burn Center, Chapel Hill, NC, 27599, USA.
3 Department of Family Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.