Most recommendations in this guideline are based on observational studies and extrapolation from other populations.
There is an urgent need for appropriately designed studies in this population.
2012-02-08
Eng.
Department of Medicine, McMaster University and Thrombosis and Atherosclerosis Research Institute, Hamilton, ON, Canada. batesm [at] mcmaster.ca
Chest. 2012 Feb;141(2 Suppl):e691S-736S
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