Assessing the outcomes and experiences of care from the perspective of people living with chronic conditions, to support countries in developing people-centred policies and practices : study protocol of the International Survey of People Living with Chronic Conditions (PaRIS survey) - de Boer, Dolf (Netherlands Institute for Health Services Research (NIVEL)) ; van den Berg, Michael (Organisation for Economic Co-operation and Development (França)) ; Ballester, Marta (Universitat Autònoma de Barcelona. Institut Universitari Avedis Donabedian) ; Bloemeke, Janika (Optimedis) ; Boerma, Wienke (Netherlands Institute for Health Services Research (NIVEL)) ; de Bienassis, Katherine (Organisation for Economic Co-operation and Development) ; Groenewegen, Peter (Utrecht University) ; Groene, Oliver (Optimedis) ; Kendir, Candan (Organisation for Economic Co-operation and Development) ; Klazinga, Niek (Organisation for Economic Co-operation and Development) ; Porter, Ian (University of Exeter Medical School) ; Suñol Sala, Rosa (Universitat Autònoma de Barcelona. Institut Universitari Avedis Donabedian) ; Thomas, Laura (Ipsos MORI (Regne Unit)) ; Valderas, Jose Maria (National University Health System) ; Williams, Rachel (Ipsos MORI UK Ltd) ; Rijken, Mieke (University of Eastern Finland)