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Schliep KC, Feldkamp ML, Hanson HA, Hollingshaus M, Fraser A, Smith KR, Panushka KA, Varner MW.Schliep KC, et al. Among authors: varner mw.Paediatr Perinat Epidemiol. 2021 May;35(3):281-291. doi: 10.1111/ppe.12737. Epub 2020 Dec 1.Paediatr Perinat Epidemiol. 2021.PMID: 33258505Free PMC article.