This call is from Wyoming. They do academic survey research on behalf of a number of different state and federal agencies (Montana Dept. of Health, Louisiana Dept. of Health, North Dakota Dept. of Health, etc.). Most surveys measure a number of health indicators (smoking, disease, etc.) to help the State address these issues and measure change over time. They hand dial every number, which is a randomly generated string of numbers. If you answer and ask to be put on their do not call list they will happily do so. All surveys have undergone OMB or Institutional Review Board approval, and all are TCPA compliant.
Look at how many number threads this guy has put his comment on:http://800notes.com/AreaCode.aspx/1-307
Notice on the earliest one he claims he received a call and did the survey. Then in later posts he magically knows all about them - what other states they survey for, how compliant they are etc...