[1] Norwegian Inst Publ Hlth, POB 222 Skoyen, N-0213 Oslo, Norway
[2] Univ Copenhagen, Dept Polit Sci, Oester Farimandsgade 5A, DK-1014 Copenhagen, Denmark
[3] Univ Copenhagen, Dept Publ Hlth, Sect Hlth Serv Res, Oester Farimagsgade 5A, DK-1014 Copenhagen, Denmark
[4] Univ Oslo, Dept Sociol & Human Geog, POB 1096, N-0317 Oslo, Norway
[5] Copenhagen Business Sch, Dept Management Polit & Philosophy, Porcelaenshven 18B, DK-2000 Frederiksberg, Denmark
[6] Tampere Univ, Fac Social Sci, FI-33014 Tampere, Finland
[7] Finnish Inst Hlth & Welf, POB 30, FI-00271 Helsinki, Finland
[8] Univ Iceland, Dept Polit Sci, Reykjavik, Iceland
[9] Myndigheten Vardoch Omsorgsanalys, Swedish Agcy Hlth & Care Serv Anal, Box 6070, 10231 Stockholm, Sweden
[10] COW4 05 London Sch Econ & Polit Sci, European Observ Hlth Syst & Policies, Houghton St, London WC2A 2AE, England
[11] London Sch Hyg & Trop Med, European Observ Hlth Syst & Policies, 15-17 Tavistock Pl, London WC1H 9SH, England