题目:To BAL or not to BAL: Is this a problem in diagnosing IPF? 5 K% U' O* W/ M/ f0 |8 ~" ~) _作者:Spagnolo P., Luppi F., Rossi G. and Richeldi L. , a C. c& F) C, D9 `; j% m5 ]% R期刊:American Journal of Respiratory and Critical Care Medicine 2009 180:4 (379-380)