https://www.icpsr.umich.edu/ICPSR/studies/37384
data 04/29/2020
https://www.icpsr.umich.edu/ICPSR/studies/37300
data 04/28/2020
https://www.icpsr.umich.edu/ICPSR/studies/37331
https://www.icpsr.umich.edu/ICPSR/studies/37338
data 04/27/2020
https://www.icpsr.umich.edu/ICPSR/studies/36879
https://www.icpsr.umich.edu/ICPSR/studies/37392
data 04/23/2020
https://www.icpsr.umich.edu/ICPSR/studies/37613
data 04/09/2020
https://www.icpsr.umich.edu/ICPSR/studies/37379
data 04/06/2020
https://www.icpsr.umich.edu/ICPSR/studies/37261
data 03/31/2020
https://www.icpsr.umich.edu/ICPSR/studies/37366
data 03/30/2020
https://www.icpsr.umich.edu/ICPSR/studies/37293
https://www.icpsr.umich.edu/ICPSR/studies/37607
data 03/24/2020
https://www.icpsr.umich.edu/ICPSR/studies/37322
data 03/05/2020
https://www.icpsr.umich.edu/ICPSR/studies/37518
data 02/27/2020
https://www.icpsr.umich.edu/ICPSR/studies/37295
https://www.icpsr.umich.edu/ICPSR/studies/36982
https://www.icpsr.umich.edu/ICPSR/studies/36843
https://www.icpsr.umich.edu/ICPSR/studies/36777
https://www.icpsr.umich.edu/ICPSR/studies/37297
https://www.icpsr.umich.edu/ICPSR/studies/37363
data 02/26/2020
https://www.icpsr.umich.edu/ICPSR/studies/37299
https://www.icpsr.umich.edu/ICPSR/studies/37201
https://www.icpsr.umich.edu/ICPSR/studies/37294
data 02/06/2020
https://www.icpsr.umich.edu/ICPSR/studies/37439
data 01/30/2020
https://www.icpsr.umich.edu/ICPSR/studies/37438