TY - GEN AU - Moreno Fernández, María Manuela AU - Matute, Helena PY - 2020 UR - https://hdl.handle.net/10481/101214 AB - Background: The internet is a relevant source of health-related information. The huge amount of information available on the internet forces users to engage in an active process of information selection. Previous research conducted in the field of... LA - eng TI - Biased Sampling and Causal Estimation of Health-Related Information: Laboratory-Based Experimental Research DO - doi: 10.2196/17502. ER -