1. Centre for Forensic Research; Department of Archaeology; Simon Fraser University; 8888 University Drive Burnaby BC V5A 1S6 Canada
2. Departments of Cell and Molecular Biology; Karolinska Institute; Berzelius väg 35 Stockholm 171-77 Sweden
3. Center for Accelerator Mass Spectrometry; Lawrence Livermore National Laboratory; Livermore CA 94551
4. Centre for Forensic & Security Technology Studies; British Columbia Institute of Technology; 3700 Willingdon Avenue Burnaby BC V5G 3H2 Canada
5. Centre for Forensic Research; Department of Biological Sciences; Simon Fraser University; 8888 University Drive Burnaby BC V5A 1S6 Canada