Maintenance: On Thursday, June 28 2018, 18:00-18:15, maintenance work on the ZORA servers is scheduled. ZORA will not be available during this period. Thank you for your patience.
Siebeling, L; Puhan, M A; Muggensturm, P; Zoller, M; Ter Riet, G (2011). Characteristics of Dutch and Swiss primary care COPD patients - baseline data of the ICE COLD ERIC study. Clinical Epidemiology, 3(1):273-283.
Siebeling, L; ter Riet, G; van der Wal, W M; Geskus, R B; Zoller, M; Muggensturm, P; Joleska, I; Puhan, M A (2009). ICE COLD ERIC--International collaborative effort on chronic obstructive lung disease: exacerbation risk index cohorts--study protocol for an international COPD cohort study. BMC Pulmonary Medicine, 9:15.