Marshalling Cuban riots in controlled medical environments (10)

I believe the answer is:

incubators

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'controlled medical environments' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.

'marshalling cuban riots' is the wordplay.
'marshalling' indicates an anagram (I've seen 'marshals' mean this (marshal can mean to gather)).
'cuban'+'riots'='cubanriots'
'cubanriots' is an anagram of 'INCUBATORS'.

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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