Lung volume reduction surgery and lung transplantation in chronic obstructive pulmonary disease.

Int J Chron Obstruct Pulmon Dis · 2008 · PMC2650594 · PMID 19281079

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highly significantno p-value reported

However the changes in cross sectional studies are highly significant ( Anyawu et al 2001 ; Gerbase et al 2005 ).

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.