Citation

Br. Med. J. BMJ 1989; 298(6681): 1179.

Comment On:

BMJ 1989;298(6676):802-3.

Erratum On

BMJ 1989 May 13;298(6683):1315

Copyright

(Copyright © 1989, BMJ Publishing Group)

DOI

unavailable

PMID

2500184

PMCID

PMC1836370

Abstract

[Abstract unavailable]

Language: en