title: Economic Burden in Direct Costs of Chronic Obstructive Pulmonary Disease (COPD) in Russia.
authors.affiliation: I. M. Sechenov First Moscow State Medical University, Moscow, Russia.
authors.forename: V
authors.initials: V
authors.lastname: Krysanova
authors.affiliation: Postgraduate Medical Institute, Moscow National University of Food Production, Moscow, Russia.
authors.forename: I
authors.initials: I
authors.lastname: Krysanov