| Authors: |
Martin EM; Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, 1812 Ashland Avenue, 3rd Floor, Baltimore, MD 21205, USA. Electronic address: emart108@jhu.edu., Schneider KE; Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, 1812 Ashland Avenue, 3rd Floor, Baltimore, MD 21205, USA., Sisco E; National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Appley MG; National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Pyfrom EM; National Institute of Standards and Technology, Gaithersburg, MD 20899, USA., Rybak M; Office of Harm Reduction at the Behavioral Health Administration, Maryland Department of Health, USA., Sherman SG; Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, 1812 Ashland Avenue, 3rd Floor, Baltimore, MD 21205, USA. |
