Alter, P., Baker, J. R., Dauletbaev, N., Donnelly, L. E., Pistenmaa, C., Schmeck, B., . . . Vogelmeier, C. F. (2020). Update in Chronic Obstructive Pulmonary Disease 2019. Am J Respir Crit Care Med.

Alter, Peter, Jonathan R. Baker, Nurlan Dauletbaev, Louise E. Donnelly, Carrie Pistenmaa, Bernd Schmeck, George Washko, and Claus F. Vogelmeier. "Update in Chronic Obstructive Pulmonary Disease 2019." Am J Respir Crit Care Med 2020.

Alter, Peter, et al. "Update in Chronic Obstructive Pulmonary Disease 2019." Am J Respir Crit Care Med 2020.