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Flowchart of children included for analysis in this study, listing completion rates of primary and secondary outcomes by exposure status. CBCL, child behaviour checklist; CELF, clinical evaluation of language fundamentals; PPVT, peabody picture vocabulary test; MAND, McCarron’s assessment of neuromuscular development; CPM, coloured progressive matrices; SDMT, symbol digit modality test; AQ, autism spectrum quotient.
