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Wagg AJ, Hassett A, Callanan MM.Wagg AJ, et al. Among authors: callanan mm.Int Breastfeed J. 2022 Jan 4;17(1):5. doi: 10.1186/s13006-021-00445-6.Int Breastfeed J. 2022.PMID: 34983584Free PMC article.