1 Department of Family Medicine & Institute for Translational Research, University of North Texas Health Science Center, Fort Worth, TX, United States.
2 University of Texas Monroe Dunaway Anderson Cancer Center, Houston, TX, United States.
3 Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, United States.
4 Department of Quantitative Health Sciences, University of Hawaii, Honolulu, HI, United States.