1. Laboratory director and toxicologist, respectively, Dade County Medical Examiner Department, Number One On Bob Hope Road Miami, FL 33136-1133, US.
2. Assistant professor, Florida International University, and visiting investigator, Dade County Medical Examiner Department, Miami, FL, US.
3. Toxicologist, West China University of Medical Sciences, Chengdu, Sechuan, CN.
4. Visiting investigator, Dade County Medical Examiner Department, Miami, FL, US.