Citation

Br. Med. J. BMJ 1991; 302(6783): 1019-1020.

Comment On:

BMJ 1991;302(6779):761-2

Comment In:

BMJ 1991;302(6785):1148

Copyright

(Copyright © 1991, BMJ Publishing Group)

DOI

unavailable

PMID

2039880

PMCID

PMC1669301

Abstract

[Abstract unavailable]

Language: en