Using gradient boosting with stability selection on health insurance claims data to identify disease trajectories in chronic obstructive pulmonary disease. Ploner, T. ORCID: https://orcid.org/0000-0003-0800-5722, Heß, S., Grum, M., Drewe-Boss, P. ORCID: https://orcid.org/0000-0002-5459-9771 and Walker, J. Statistical Methods in Medical Research 29 (12): 3684-3694. 1 December 2020