PubMed:23667615 / 2164-2168
Annnotations
Zierdiyeerkenaili_800_3
{"project":"Zierdiyeerkenaili_800_3","denotations":[{"id":"T8","span":{"begin":0,"end":4},"obj":"DP"}],"text":"COPD"}
yaoziqian_800_3
{"project":"yaoziqian_800_3","denotations":[{"id":"T13","span":{"begin":0,"end":4},"obj":"DP"}],"text":"COPD"}