PubMed:22798143 / 357-361
Annnotations
pubmed-enju-pas
{"project":"pubmed-enju-pas","denotations":[{"id":"EnjuParser_T52","span":{"begin":0,"end":4},"obj":"VBN"}],"namespaces":[{"prefix":"_base","uri":"http://kmcs.nii.ac.jp/enju/"}],"text":"been"}