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Tsai WC, Lewis D, Nasr SZ, Hirschl RB.Tsai WC, et al. Among authors: nasr sz.Pediatr Pulmonol. 1998 Oct;26(4):283-6. doi: 10.1002/(sici)1099-0496(199810)26:4<283::aid-ppul8>3.0.co;2-6.Pediatr Pulmonol. 1998.PMID: 9811079Free article.