1. Capstone College of Nursing, The University of Alabama, Tuscaloosa, AL, USA
2. Department of Sociology, University of Alabama at Birmingham, Birmingham, AL, USA
3. School of Nursing, University of Alabama at Birmingham, Birmingham, AL, USA
4. Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
5. Department of Clinical and Diagnostic Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
6. Department of Anesthesiology, Washington University Pain Center, Washington University, St. Louis, MO, USA