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The safe passage study: design, methods, recruitment, and follow-up approach.
Dukes KA, Burd L, Elliott AJ, Fifer WP, Folkerth RD, Hankins GD, Hereld D, Hoffman HJ, Myers MM, Odendaal HJ, Signore C, Sullivan LM, Willinger M, Wright C, Kinney HC; PASS Research Network. Dukes KA, et al. Paediatr Perinat Epidemiol. 2014 Sep;28(5):455-65. doi: 10.1111/ppe.12136. Epub 2014 Aug 5. Paediatr Perinat Epidemiol. 2014. PMID: 25131605 Free PMC article.