| Original language | English |
|---|---|
| Article number | a1167 |
| Pages (from-to) | 644-645 |
| Number of pages | 2 |
| Journal | British Medical Journal (BMJ) |
| Volume | 337 |
| Issue number | 7671 |
| DOIs | |
| Publication status | Published - 20 Sept 2008 |
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