Postgrad Med J. 1959 Oct;35(408):580-2. doi: 10.1136/pgmj.35.408.580.
Postgraduate medical journal
M J Greenberg, D M Gregg
PMID: 21313644 PMCID: PMC2501885 DOI: 10.1136/pgmj.35.408.580
[No abstract available.]