"Sector Programs". CDC – National Institute for Occupational Safety and Health - National Occupational Research Agenda. August 13, 2013. Archived from the original on September 27, 2013. Retrieved September 10, 2013.
"Sector Programs". CDC – National Institute for Occupational Safety and Health - National Occupational Research Agenda. August 13, 2013. Archived from the original on September 27, 2013. Retrieved September 10, 2013.