Increase of ABH nonsecretor among relatives of COPD patients.
D000017:ABO Blood-Group System / Q000235:genetics*; D005541:Forced Expiratory Volume; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000235:genetics*; D008175:Lung Neoplasms / Q000235:genetics; D014797:Vital Capacity
D000017:ABO Blood-Group System