1. Division of Environmental and Occupational Disease Control, Environmental Health Laboratory Branch; California Department of Public Health (retired); 850 Marina Bay Parkway Richmond CA 94804
2. California Division of Occupational Safety and Health (retired); P.O. Box 501 Pacifica CA 94044
3. Department of Environmental and Occupational Health, School of Community Health Sciences; University of Nevada, Las Vegas; 4505 S. Maryland Parkway Las Vegas NV 89154
4. Division of Communicable Disease Control, Microbial Diseases Laboratory Program; California Department of Public Health; 850 Marina Bay Parkway Richmond CA 94804
5. School of Medicine; University of California, San Francisco; 2789 25th St. San Francisco CA 94110
6. Division of Occupational and Environmental Medicine (Emeritus), School of Medicine; University of California, San Francisco; Campus Box 0843 San Francisco CA 94143