Urwyler, P.; Hussein, N. A.; Bridevaux, P. O.; Chhajed, P. N.; Geiser, T.; Grendelmeier, P.; Zellweger, L. J.; Kohler, M.; Maier, S.; Miedinger, D.; Tamm, M.; Thurnheer, R.; Dieterle, T.; Leuppi, J. D. Predictive Factors for Exacerbation and Reexacerbation in Chronic Obstructive Pulmonary Disease: An Extension of the Cox Model to Analyze Data from the Swiss COPD Cohort. Multidiscip Respir Med 2019, 14 (1). https://doi.org/10.4081/mrm.2019.6.