"study number","owner","title","investigators","doi","time period"
"04636","ICPSR","Voice of the People, 2005","Gallup International Association","http://dx.doi.org/10.3886/ICPSR04636.v1","2005"
"21441","ICPSR","Voice of the People, 2007","Gallup International Association","http://dx.doi.org/10.3886/ICPSR21441.v1","2007"