| Original language | English |
|---|---|
| Pages (from-to) | 819-820 |
| Number of pages | 2 |
| Journal | BMJ |
| Volume | 317 |
| Issue number | 7161 |
| Publication status | Published - 19 Sept 1998 |
Bibliographical note
Copyright:Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.