A literature review of the evidence that a 12% improvement in FEV1 is an appropriate cut-off for children

A literature review of the evidence that a 12% improvement in FEV1 is an appropriate cut-off for children. https://t.co/yfUsrKpETf

A literature review of the evidence that a 12% improvement in FEV1 is an appropriate cut-off for children https://t.co/AcUQgGVRDh

A literature review of the evidence that a 12% improvement in FEV1 is an appropriate cut-off for children https://t.co/gV0zVG8k4w

A literature review of the evidence that a 12% improvement in FEV1 is an appropriate cut-off for children. https://t.co/neFJYV8L49