In 2017, a book was published on patient involvement in HTA (Eds Facey KM, Hansen HP, Single ANV) bringing together research, approaches, methods and case studies prepared by 80 authors.[22] It demonstrates that practices vary between HTA bodies, and patients can potentially contribute at every stage of an HTA from scoping the questions asked about the health technology, providing input, interpreting the evidence, and drafting and communicating recommendations. It suggests that patient participation in HTA depends on two-way communication and is a dialogue for shared learning and problem solving.