Stakeholders involvement by HTA Organisations: Why is so different?

To investigate stakeholder involvement by Health Technology Assessment Organisations (HTAOs) in France, Spain, England and Wales, Germany, Sweden, and The Netherlands and to examine whether this involvement depends on (i) the administrative tradition and the relevant conception of the relationship between state and society (contractarian and corporative vs. organic), (ii) the general structure of the healthcare system (HCS) (Bismarckian vs. Beveridgian system), and (iii) the role of Health Technology Assessment (HTA) and HTAOs in the HCS.