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Bell KA, Wagner CL, Perng W, Feldman HA, Shypailo RJ, Belfort MB.Bell KA, et al. Among authors: wagner cl.J Pediatr. 2018 May;196:168-174.e1. doi: 10.1016/j.jpeds.2018.01.028. Epub 2018 Mar 15.J Pediatr. 2018.PMID: 29551311Free PMC article.