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Saada A, Lieu TA, Morain SR, Zikmund-Fisher BJ, Wittenberg E.Saada A, et al.Clin Pediatr (Phila). 2015 Mar;54(3):236-43. doi: 10.1177/0009922814548838. Epub 2014 Sep 7.Clin Pediatr (Phila). 2015.PMID: 25200366
Zikmund-Fisher BJ, Wittenberg E, Lieu TA.Zikmund-Fisher BJ, et al.Vaccine. 2016 Dec 7;34(50):6123-6125. doi: 10.1016/j.vaccine.2016.10.030. Epub 2016 Nov 3.Vaccine. 2016.PMID: 27817959
Sun X, Huang Z, Wagner AL, Prosser LA, Xu E, Ren J, Wang B, Yan W, Zikmund-Fisher BJ.Sun X, et al.BMC Public Health. 2018 Jun 28;18(1):813. doi: 10.1186/s12889-018-5734-9.BMC Public Health. 2018.PMID: 29954371Free PMC article.