1. a University of South Florida, College of Public Health , 13201 Bruce B. Downs Blvd., Tampa, FL, 33612-3805, USA
2. b University of South Florida College of Education , 4202 E. Fowler Ave., PED 241, Tampa, FL, 33612, USA
3. c DuPont Central Research and Development , Wilmington, DE, USA
4. d Battelle Natick Operations, National Security Division , Salem, VA, USA