bibliographic entry 4681679 [be/4681679]
https://w3id.org/oc/corpus/be/4681679

is a

• bibliographic reference

content

• Salvi, SS, Barnes, PJ. Chronic obstructive pulmonary disease in nonsmokers, Lancet, 2009, 374, 733, 743, DOI: 10.1016/S0140-6736(09)61303-9, PMID: 19716966

references

• https://w3id.org/oc/corpus/br/1066997