Citation

Campbell IW, Ratcliffe JG. Br. Med. J. (Clin. Res. Ed.) 1982; 285(6339): 408-409.

Copyright

(Copyright © 1982, British Medical Association, Publisher BMJ Publishing Group)

DOI

unavailable

PMID

6809104

PMCID

PMC1499212

Abstract

[Abstract unavailable]

Language: en