[1
]
London School of Economics and Political Science, LSE Health and Social Care, Department
of Social Policy, Houghton Street, London WC2A 2AE, UK; King's College London, Department
of Social Science, Health and Medicine, London WC2R 2LS, UK. Electronic address: e.courtin@lse.ac.uk.
[2
]
King's College London, Department of Social Science, Health and Medicine, London WC2R
2LS, UK; Harvard T.H Chan School of Public Health, Department of Social and Behavioral
Sciences, 677 Huntington Avenue, Boston, MA 02115, USA.