[1] World Econ Forum, Chron Dis & Well Being, CH-1223 Geneva, Switzerland
[2] Newcastle Univ, Inst Hlth & Soc, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Univ Warwick, Coventry CV4 7AL, W Midlands, England
[4] Univ Southampton, Southampton, Hants, England
[5] Univ Helsinki, Helsinki, Finland
[6] London Sch Econ, London WC2A 2AE, England
[7] Univ Lancaster, Lancaster, England
[8] British Telecommun PLC, London, England