The U.S. COVID-19 Trends and Impact Survey, 2020-2021: Continuous real-time measurement of COVID-19 symptoms, risks, protective behaviors, testing and vaccination
MedRxiv: the preprint server for health sciences,
vi, (e-only) S.,
2021
Salomon, Joshua,
Alex Reinhart,
Alyssa Bilinski,
Eu Chua,
Wichada La Motte-Kerr,
Minttu Rönn,
Marissa Reitsma,
Katherine Morris,
Sarah LaRocca,
Tamar Farag,
Frauke Kreuter,
Roni Rosenfeld,
Ryan Tibshirani