Text and Data Mining valid from 2018-10-03
First Online: 3 October 2018
Compliance with Ethical Standards
: Agnes Kant, Loes de Vries and Leàn Rolfes declare that they have no conflicts of interest that are directly relevant to the content of this study.
: Writing this article was one of the activities of Lareb as World Health Organization (WHO) Collaborating Centre for Pharmacovigilance in Education and Patient Reporting (ExternalRef removed). Lareb received support from the WHO Programme for International Drug Monitoring.