Erdal, M., Johannessen, A., Eagan, T. M., Bakke, P., Gulsvik, A., & Grønseth, R. (2016). Incidence of utilization- and symptom-defined COPD exacerbations in hospital- and population-recruited patients. Int J Chron Obstruct Pulmon Dis.

Erdal, Marta, Ane Johannessen, Tomas Mikal Eagan, Per Bakke, Amund Gulsvik, and Rune Grønseth. "Incidence of Utilization- and Symptom-defined COPD Exacerbations in Hospital- and Population-recruited Patients." Int J Chron Obstruct Pulmon Dis 2016.

Erdal, Marta, et al. "Incidence of Utilization- and Symptom-defined COPD Exacerbations in Hospital- and Population-recruited Patients." Int J Chron Obstruct Pulmon Dis 2016.