Published in

BMJ Publishing Group, BMJ, 6490(291), p. 275-275, 1985

DOI: 10.1136/bmj.291.6490.275

BMJ Publishing Group, BMJ, 6408(287), p. 1876-1876, 1983

DOI: 10.1136/bmj.287.6408.1876

BMJ Publishing Group, BMJ, 6380(286), p. 1816-1816, 1983

DOI: 10.1136/bmj.286.6380.1816

Links

• ORCID
• BMJ Publishing Group
• BMJ Publishing Group
• BMJ Publishing Group
• [www.ncbi.nlm.nih.gov] | PDF
• [www.ncbi.nlm.nih.gov] | PDF
• [www.ncbi.nlm.nih.gov] | PDF
• [www.researchgate.net] | PDF

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