求助英文文献一篇

meilin0118

题目：Clinical consequences of exposing pregnant gilts to strains of porcine reproductive and respiratory syndrome (PRRS) virus isolated from field cases of "atypical" PRRS.
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& o4 d! Y- ?* m/ _8 r. N2 lAm J Vet Res. 1998 Dec;59(12):1540-4.$ ^- k: r2 r! h: B# S
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链接：http://www.ncbi.nlm.nih.gov/pubmed/9858403