The NTP Office of Health Assessment and Translation develops literature-based evaluations to reach conclusions about potential human health hazards and to examine the state of the science. The output from an evaluation can vary including, but not limited to: NTP Monograph, state of the science workshop report, or peer-reviewed journal publication. All evaluations follow a similar process with opportunities for external scientific, public, and interagency input. In 2012, OHAT began implementing systematic review methodology to carry out these evaluations (Birnbaum et al 2013, Rooney et al. 2014).