BMJ Publishing Group, BMJ, 6461(290), p. 28-29, 1985
BMJ Publishing Group, BMJ, 6467(290), p. 558-558, 1985
DOI: 10.1136/bmj.290.6467.558-b
BMJ Publishing Group, BMJ, 6467(290), p. 558-559, 1985
DOI: 10.1136/bmj.290.6467.558-c
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