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References from Understanding the Diagnosis and Treatment of COPD and Asthma to Better Inform Site Selection and Patient Recruitment Planning. Local targets link to admitted publications; unresolved targets remain external evidence.
10.1016/j.cct.2007.10.002
10.1016/j.cct.2007.10.002 · 2008 · External reference
Unresolved reference
2011 · External reference
10.1111/j.1398-9995.2004.00526.x
10.1111/j.1398-9995.2004.00526.x · 2004 · External reference
10.1016/s0954-6111(98)90293-1
10.1016/s0954-6111(98)90293-1 · 1998 · External reference
10.1353/hpu.2011.0031
10.1353/hpu.2011.0031 · 2011 · External reference
Unresolved reference
2009 · External reference
