1. Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan
2. Biostatistics and Bioinformatics Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health & Human Development, National Institute of Health, Bethesda, Maryland, Biostatistics Branch,
Division of Cancer Epidemiology & Genetics, National Cancer Institute, National Institutes of Health, Rockville, Maryland
3. Arkansas Department of Health, Little Rock, Arkansas, Department of Epidemiology, Fay W Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas
4. Arkansas Department of Health, Little Rock, Arkansas, Department of Internal Medicine, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA