0

Purchase Short-Term Access

How Much Did Biases in the Study of Chronic Obstructive Pulmonary Disease Medications and Mortality Affect the Outcome?
Takeharu Koga, MD, PhD; Tomoko Kamimura, MD, PhD; Munetsugu Nishimura, MD
Annals of Internal Medicine 2009;150:426. doi:10.7326/0003-4819-150-6-200903170-00019

Purchase Online access to this article for 24 hours
Buy Now

Buy Now

to gain full access to the content and tools.

Want to Subscribe?

Learn more about subscription options

Forgot your password?
Enter your username and email address. We'll send you a reminder to the email address on record.
(Required)
(Required)