1. Department of Psychiatry, Center for Human-Animal Interaction, Virginia Commonwealth University, Richmond, Virginia, USA;
2. Department of Mathematics and Statistics, Air Force Institute of Technology, Wright-Patterson Air Force Base, Ohio, USA;
3. School of Business, Virginia Commonwealth University, Richmond, Virginia, USA;
4. Department of Psychology, Virginia Commonwealth University;
5. Virginia Institute for Psychiatric and Behavioral Genetics, Department of Psychiatry, Virginia Commonwealth University;
6. Departments of Psychology, African American Studies, and Human and Molecular Genetics, Virginia Commonwealth University