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JOURNAL.PONE.0109721
JOURNAL.PONE.0109721
http://dx.doi.org/10.1371/JOURNAL.PONE.0109721
Predictors of exacerbations in chronic obstructive pulmonary disease--results from the Bergen COPD cohort study.
P356
Q34287563-99A761B4-1932-4799-A806-FBE903323493
P356
JOURNAL.PONE.0109721
http://dx.doi.org/10.1371/JOURNAL.PONE.0109721