PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26392765-1 2015 PURPOSE: To explore the association between host serum 25-hydroxyvitamin D (25(OH)D) and the susceptibility and severity of COPD. 25-hydroxyvitamin D 55-74 COPD Homo sapiens 124-128