Serum levels of Clara cell secretory protein, asthma, and lung function in the adult general population

a Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain b Inserm U1018, CESP Centre for Research in Epidemiology and Population Health, Respiratory and Environmental Epidemiology Team, Villejuif, France c Universite Paris Sud 11, Villejuif, France d IMIM (Hospital del Mar Research Institute), Barcelona, Spain e CIBER Epidemiologia y Salud Publica (CIBERESP), Spain f Pulmonology Department-Muscle and Respiratory System Research Unit (URMAR), Hospital del Mar-IMIM, Parc de Recerca Biomedica de Barcelona (PRBB), Barcelona, and Centro de Investigacion en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Bunyola, Majorca, Balearic Islands, Spain g Hospital General de Almansa, Complejo Hospitalario Universitario de Albacete, Spain, and the Unit of Epidemiology and Health Information, Public Health of Bizkaia, Bizkaia, Spain h Department of Health, Basque Government, Bilbao, Basque Country, Spain i Unit of Epidemiology and Medical Statistics, Department of Public Health and Community Medicine, University of Verona, Verona, Italy j Universitat Pompeu Fabra, Barcelona, Spain k Arizona Respiratory Center, University of Arizona, Tucson, Ariz