1. School of Biomedical Sciences, Kent State University, Kent, Ohio, USA.
2. Department of Internal Medicine, Akron General Medical Center, Akron, Ohio, USA.
3. Department of Internal Medicine, Northeast Ohio Medical University, Rootstown, Ohio, USA.
4. Department of Biostatistics, Kent State University, Kent, Ohio, USA.
5. Department of Environmental Health Science, Kent State University, Kent, Ohio, USA.