List of quality criteria for comorbidity studies in COPD and their implementation in studies under review.
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✓: Yes; ⊠: No; n.a.: not applicable; : unknown1: Items partly based on Husereau et al. [40], McKeage et al. [41], Molinier et al. [42]List of quality criteria for comorbidity studies in COPD and their implementation in studies under review.
创建时间：
2015-12-03
