1. State University of New York Upstate Medical University, Syracuse, New York, USA
2. Department of Veterans Affairs Medical Center, Syracuse, New York, USA
3. University of California–Irvine, Irvine, California, USA
4. University of Alabama–Birmingham, Birmingham, Alabama, USA
5. Jacksonville State University, College of Nursing and Health Sciences, Jacksonville, Alabama, USA
6. Agency for Toxic Substances and Disease Registry, Atlanta, Georgia, USA