Here is a summary of the responses, for which many thanks.
From what I can gather the BMA advises doctors to write in the "style" that the organisation or publication you are writing for wants.
There are British standards for citing & referencing materials used in (scientific) writing your work. These are British Standards 1629 and 5605 (Recommendations for references to published materials BSI, 1989. BS 1629. & Recommendations for citing and referencing published material. 2nd ed. BSI, 1990. BS 5605)
As there is no British equivalent to the AMA style guide: why not just use it?
- You could refer your reader to the 'Uniform requirements ...' here:
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