Funding for this research was provided by:
Centers for Disease Control and Prevention (PS09-937)
Text and Data Mining valid from 2018-12-13
First Online: 13 December 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: The Centers for Disease Control and Prevention determined that the Medical Monitoring Project is a public health surveillance activity. MMP itself is therefore not subject to human subjects regulations including federal institutional review board review. The IRB at the University of North Carolina at Chapel Hill determined that these analyses were exempt from full review (UNC IRB #14-2675).