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Written consent was obtained from all patients and\/or their parents.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"None.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Disclosures"}},{"value":"Kalpana Manthiram was supported by the Childhood Infection Research Program (1T32AI095202-01) and Conducting Child Health Care Research in Vulnerable Populations (1T32HD060554-05) training grants from Vanderbilt University School of Medicine. Funding for immunohistochemical staining was provided by the Vanderbilt University School of Medicine Department of Pathology, Microbiology, and Immunology Mini-sabbatical Fellowship. Support for REDCap for data collection and analysis was provided by the Vanderbilt Institute for Clinical and Translational Research grant support (UL1 TR000445 from NCATS\/NIH). Funding sources did not have a role in the conduct of research and\/or preparation of the manuscript.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Financial support"}}]}}