Dead wrong about the medical centre receiving support (5)

I believe the answer is:

aided

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'dead wrong about the medical centre receiving support' is the definition.
I can't tell whether this definition defines the answer.

'dead wrong about the medical centre' is the wordplay.
'wrong' is an anagram indicator.
'about' means one lot of letters goes inside another.
'centre' indicates the central letters.
The middle letter of 'medical' is 'i'.
'dead' is an anagram of 'aded'.
'aded' enclosing 'i' is 'AIDED'.

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(Other definitions for aided that I've seen before include "not under their own steam?" , "'Assisted, helped (5)'" , "given assistance" .)

I've seen this clue in the Evening Standard.

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