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We describe four causes of upper airway obstruction (paradoxical vocal cord movement, subglottic stenosis, retrosternal goitre and double aortic arch) which were misdiagnosed as \u2018poorly controlled asthma\u2019.<\/jats:p>","DOI":"10.1136\/bcr-2013-201100","type":"journal-article","created":{"date-parts":[[2013,9,26]],"date-time":"2013-09-26T07:36:33Z","timestamp":1380180993000},"page":"bcr2013201100","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":13,"title":["Rare causes of persistent wheeze that mimic poorly controlled asthma"],"prefix":"10.1136","volume":"2013","author":[{"given":"Matshediso Constantia","family":"Mokoka","sequence":"first","affiliation":[{"name":"Department of Respiratory Medicine, Mercy University Hospital, Cork, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Khalil","family":"Ullah","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine, Mercy 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