Source:
British medical journal [Br Med J] 1952 Jan 05; Vol. 1 (4748), pp. 7-13.Publisher: British Medical Association Country of Publication: England NLM ID: 0372673 Publication Model: Print Cited Medium: Print ISSN:
Source:
British medical journal [Br Med J] 1956 Jun 09; Vol. 1 (4979), pp. 1348-9.Publisher: British Medical Association Country of Publication: England NLM ID: 0372673 Publication Model: Print Cited Medium: Print ISSN: