Aebi, Nicola JuliaDe Ridder, DavidOchoa, CarlosPetrovic, DusanFadda, MartaElayan, SuzanneSykora, MartinPuhan, MiloNaslund, John A.Mooney, Stephen J.Gruebner, Oliver2021-05-222021-05-222021-05-222021-04-0810.3389/ijph.2021.633451https://infoscience.epfl.ch/handle/20.500.14299/178332WOS:000642083800001Public, Environmental & Occupational Healthsurveillancedigital epidemiologyspatial epidemiologydigital health geographysocial mediaopportunitiesCan Big Data Be Used to Monitor the Mental Health Consequences of COVID-19?text::journal::journal article::research article