Adverse Drug Reactions detection on social media: bias and limitation

Social media are computer-mediated technologies that facilitate the creation & sharing of information and are an important source for Adverse Drug Reaction (ADR) collection. This can help to reduce under-reporting in postmarketing phase products or monitor drug-specific trends.
The present paper aims to provide a more in-depth understanding of the data which can be collected for ADR detection, to estimate bias and limitations across sources and languages.