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. 2019 Aug 2;9(8):e030476. doi: 10.1136/bmjopen-2019-030476

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Group assignment during the trial. During each 3-month period of the study, one cluster is assigned to protocolised support (P), and the other to usual care (U).