[1] Hannover Med Sch, Ctr Publ Hlth & Healthcare, Carl Neuberg Str 1, DE-30625 Hannover, Germany
[2] German Ctr Lung Res DZL, Biomed Res Endstage & Obstruct Lung Dis Hannover, Hannover, Germany
[3] Ostseeklin Schonberg Holm, Ostseebad Schonberg, Germany
[4] MEDIAN Klin Heiligendamm, Heiligendamm, Germany
[5] Klin Wehrawald, Todtmoos, Germany
[6] Inst Biometry, Hannover, Germany
[7] Hannover Med Sch, Inst Epidemiol Social Med & Hlth Syst Res, Hannover, Germany
[8] Klin Bad Reichenhall, Bad Reichenhall, Germany