<https://blogs.biomedcentral.com/on-medicine/2020/05/15/how-is-the-who-trial-registry-network-responding-to-the-covid-19-pandemic/#webpage>
<http://schema.org/datePublished>
<https://blogs.biomedcentral.com/on-medicine/2020/05/15/how-is-the-who-trial-registry-network-responding-to-the-covid-19-pandemic/>