1999,
Institute of Electrical and Electronics Engineers (IEEE) - Engineering in Medicine and Biology Society (EMBS) Committee on Man and Radiation (COMAR)
U.S. Department of Health and Human Services (HHS), U.S. Public Health Service (PHS), Centers for Disease Control and Prevention (CDC), National Institute for Occupational Safety and Health (NIOSH),
DHHS (NIOSH) Publication Number 98-131: 1-43