Citation

Mullen PE. Br. Med. J. BMJ 1991; 303(6795): 144-145.

Comment In:

BMJ 1991;303(6799):415

Copyright

(Copyright © 1991, BMJ Publishing Group)

DOI

unavailable

PMID

1878633

PMCID

PMC1670392

Abstract

[Abstract unavailable]

Language: en