Nathan Gaddis is a Research Programmer/Analyst at RTI International, USA. He was a Postdoctoral Fellow in Microbiology at Duke University Medical Center from February 2004 to March 2009 (5 years 2 months). He was a Health Systems Analyst at Duke Clinical Research Institute between January 1994 and March 1996. He was a Computer Programmer at Cordillera, LLC in 1996.