?:authorAffiliation
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[\'Pulmonary Medicine and Sleep Medicine Center, Zurich RehaCenter Klinik Wald, CH-8636 Wald, Switzerland.\', \'Department of Pulmonary Medicine, Faculty of Health, University Witten-Herdecke, D-58455 Witten, Germany.\', \'Neurological Rehabilitation, Zurich RehaCenter Klinik Wald, CH-8636 Wald, Switzerland.\', \'Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Koeln GmbH, D-51109 Koeln, Germany.\', \'Department of Cardiology, University Heart Centre, University Hospital Zurich, CH-8006 Zurich, Switzerland.\']
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