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. 2022 May 18;12(5):e056039. doi: 10.1136/bmjopen-2021-056039

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Layers of supervision in the peer support mechanism. ADRs, adverse drug reactions; NPC, National Pharmacovigilance Centre; USSD, unstructured supplementary service data.