Welte, T. (2014). Chronic Obstructive Pulmonary Disease—a Growing Cause of Death and Disability Worldwide. Dtsch Arztebl Int.
Παραπομπή Chicago StyleWelte, Tobias. "Chronic Obstructive Pulmonary Disease—a Growing Cause of Death and Disability Worldwide." Dtsch Arztebl Int 2014.
Παραπομπή MLAWelte, Tobias. "Chronic Obstructive Pulmonary Disease—a Growing Cause of Death and Disability Worldwide." Dtsch Arztebl Int 2014.
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