Original language | English |
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Pages (from-to) | 1545-1546 |
Number of pages | 2 |
Journal | The Lancet |
Volume | 378 |
Issue number | 9802 |
DOIs | |
Publication status | Published - 2011 |
Bibliographical note
Funding Information:This study was funded by the UK Department of Health Policy Research Programme , grant numbers 019/0047 and 039/0031 . The views expressed in this letter are those of the authors and not necessarily those of the Department of Health. We declare that we have no conflicts of interest.