Postgrad Med J. 1975 Feb;51(592):115-6. doi: 10.1136/pgmj.51.592.115.
Postgraduate medical journal
J M Duckham, H A Lee
PMID: 1114146 PMCID: PMC2495719 DOI: 10.1136/pgmj.51.592.115 Free PMC Article
[No abstract available.]