RT Journal Article SR Electronic T1 Is 13 g·dL⁻¹慢性阻塞性肺病的阈值来纠正贫血吗?摩根富林明欧洲ean Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1024 OP 1025 DO 10.1183/09031936.00062607 VO 30 IS 5 A1 Singh, A. YR 2007 UL //www.qdcxjkg.com/content/30/5/1024.abstract AB