After completion of milestone 7 “Development of data extraction form, protocol, and guidelines and adaptation of software”, we already had a technical face-to-face meeting on 4th and 5th of October in Utrecht. All researchers that extract data participated, namely FAD, IR-HSCSP, Nivel. UOI attended the meeting via Skype to provide input from the perspective of performing network meta-analysis. At this meeting, IR-HSCSP also led a risk of bias seminar. Another training session was held on 3rd and 4th of December on how to use the online extraction form. Everyone practiced by using the form based on real-case RCT data extraction to ensure inter-researcher reliability. A discussion followed in which the online form was further adjusted to maximise the clarity of its concepts and instructions. The team agreed on the dates and deadlines for the rest of the extraction process.