{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T17:12:47Z","timestamp":1775149967157,"version":"3.50.1"},"reference-count":19,"publisher":"Korean Association of Internal Medicine","issue":"3","license":[{"start":{"date-parts":[[2020,6,24]],"date-time":"2020-06-24T00:00:00Z","timestamp":1592956800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100003669","name":"Korea Centers for Disease Control and Prevention","doi-asserted-by":"crossref","award":["2014-P33003-00"],"award-info":[{"award-number":["2014-P33003-00"]}],"id":[{"id":"10.13039\/501100003669","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["kjim.org"],"crossmark-restriction":true},"short-container-title":["Korean J Intern Med"],"published-print":{"date-parts":[[2021,5,1]]},"DOI":"10.3904\/kjim.2019.314","type":"journal-article","created":{"date-parts":[[2020,6,24]],"date-time":"2020-06-24T03:43:21Z","timestamp":1592970201000},"page":"629-635","update-policy":"https:\/\/doi.org\/10.3904\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Cut-off value of FEV1\/FEV6 to determine airflow limitation using handheld spirometry in subjects with risk of chronic obstructive pulmonary disease"],"prefix":"10.3904","volume":"36","author":[{"given":"Yong Il","family":"Hwang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Youlim","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chin Kook","family":"Rhee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Deog Kyeom","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong Bum","family":"Park","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kwang Ha","family":"Yoo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ki-Suck","family":"Jung","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chang Youl","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2270","reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pmed.0030442"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1378\/chest.117.2_suppl.5S"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1016\/j.pupt.2017.12.009"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S16396"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.4046\/trd.2017.80.3.241"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1378\/chest.127.5.1560"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1164\/ajrccm.162.3.9907115"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1053\/rmed.2001.1270"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000005683"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1038\/npjpcrm.2014.33"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S136244"},{"key":"ref12","volume-title":"","year":"2020"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.7326\/0003-4819-155-3-201108020-00008"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1111\/j.1440-1843.2011.01951.x"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.4046\/trd.2008.64.2.109"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.2147\/COPD.S113568"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1183\/13993003.00164-2019"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.201612-2531OC"},{"key":"ref19","first-page":"117","volume-title":"Global, regional, and national age-sex specific all-cause and cause-specific mortality for 240 causes of death, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013","year":"2015"}],"container-title":["The Korean Journal of Internal Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/kjim.org\/upload\/kjim-2019-314.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/kjim.org\/journal\/view.php?doi=10.3904\/kjim.2019.314","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/kjim.org\/upload\/kjim-2019-314.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,5,13]],"date-time":"2021-05-13T06:47:24Z","timestamp":1620888444000},"score":1,"resource":{"primary":{"URL":"http:\/\/kjim.org\/journal\/view.php?doi=10.3904\/kjim.2019.314"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,1]]},"references-count":19,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2021,5]]}},"URL":"https:\/\/doi.org\/10.3904\/kjim.2019.314","relation":{},"ISSN":["1226-3303","2005-6648"],"issn-type":[{"value":"1226-3303","type":"print"},{"value":"2005-6648","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,5,1]]},"assertion":[{"value":"2019-09-19","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-02-27","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2020-06-24","order":2,"name":"published","label":"Published online","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-05-01","order":3,"name":"published","label":"Print publication","group":{"name":"publication_history","label":"Publication History"}}]}}