[1] London Sch Econ & Polit Sci, Care Policy & Evaluat Ctr, London, England
[2] European Ctr Social Welf Policy & Res, Vienna, Austria
[3] Univ Lisbon, ISEG Lisbon Sch Econ & Management, Lisbon, Portugal
[4] SOCIUS, Res Ctr Econ & Org Sociol, Lisbon, Portugal
[5] Univ Plymouth, Fac Hlth, Plymouth, Devon, England
[6] Newcastle Univ, Fac Med Sci, Populat Hlth Sci Inst, Newcastle Upon Tyne, Tyne & Wear, England