BMJ 1993;307:1573 (Published 18 December 1993)
18 December 1993 (Vol 307, Issue 6919)
Research Articles
BMJ 1993;307:1574 (Published 18 December 1993)
BMJ 1993;307:1579 (Published 18 December 1993)
BMJ 1993;307:1582 (Published 18 December 1993)
BMJ 1993;307:1584 (Published 18 December 1993)
BMJ 1993;307:1588 (Published 18 December 1993)
Research Articles - continued
BMJ 1993;307:1592 (Published 18 December 1993)
BMJ 1993;307:1597 (Published 18 December 1993)
BMJ 1993;307:1603 (Published 18 December 1993)
BMJ 1993;307:1609 (Published 18 December 1993)
BMJ 1993;307:1614 (Published 18 December 1993)
BMJ 1993;307:1623 (Published 18 December 1993)
Research Articles - continued - continued
BMJ 1993;307:1624 (Published 18 December 1993)
BMJ 1993;307:1626 (Published 18 December 1993)
BMJ 1993;307:1627 (Published 18 December 1993)
BMJ 1993;307:1631 (Published 18 December 1993)






