1. Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, USA
2. RTI International, Research Triangle Park, NC, USA
3. National Heroin Coordination Group, Office of National Drug Control Policy, Washington, DC, USA
4. Office of Forensic Sciences for the Drug Enforcement Administration’s (DEA) Southeast Laboratory, Miami, FL, USA
5. Council on Science and Public Health, American Medical Association, Chicago, IL, USA
6. Office of Special Programs, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD, USA
7. DOJ National Institute of Justice, Office of Investigative and Forensic Sciences, Washington, DC, USA
8. NMS Labs, Willow Grove, PA, USA
9. US Customs and Border Protection, Washington, DC, USA
10. Pathology and Radiology, New Mexico Office of the Medical Investigator, Albuquerque, NM, USA
11. Cuyahoga County Regional Forensic Sciences Laboratory, Cleveland, OH, USA
12. Organized Crime Drug Enforcement Task Forces, Department of Justice, Washington, DC, USA
13. University of Florida, Gainesville, FL, USA