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Pediatrics [Pediatrics] 2000 Oct; Vol. 106 (4), pp. E46.Publisher: American Academy of Pediatrics Country of Publication: United States NLM ID: 0376422 Publication Model: Print Cited Medium: Internet ISSN:
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The New England journal of medicine [N Engl J Med] 1998 Dec 31; Vol. 339 (27), pp. 2024-5.Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print Cited Medium: Print ISSN: