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ISCCM guidelines for the use of non-invasive ventilation in acute respiratory failure in adult ICUs. Indian J Crit Care Med. 2020, 24:S61-81. 10.5005\/jp-journals-10071-G23186","journal-title":"Indian J Crit Care Med"},{"key":"ref53","doi-asserted-by":"publisher","DOI":"10.4103\/lungindia.lungindia_335_19","article-title":"A comparison of three strategies for withdrawal of noninvasive ventilation in chronic obstructive pulmonary disease with acute respiratory failure: Randomized trial","volume":"37","author":"Venkatnarayan K","year":"2020","unstructured":"Venkatnarayan K, Khilnani GC, Hadda V, Madan K, Mohan A, Pandey RM, Guleria R. A comparison of three strategies for withdrawal of noninvasive ventilation in chronic obstructive pulmonary disease with acute respiratory failure: Randomized trial. Lung India. 2020, 37:3-7. 10.4103\/lungindia.lungindia_335_19","journal-title":"Lung India"},{"key":"ref54","doi-asserted-by":"publisher","DOI":"10.4103\/ijrc.ijrc_23_18","article-title":"A study of outcome of non-invasive ventilatory support in acute respiratory failure","volume":"8","author":"Kshatriya RM","year":"2019","unstructured":"Kshatriya RM, Khara NV, Oza N, et al.. A study of outcome of non-invasive ventilatory support in acute respiratory failure. Indian J Respir Care. 2019, 8:1-7. 10.4103\/ijrc.ijrc_23_18","journal-title":"Indian J Respir Care"},{"key":"ref55","doi-asserted-by":"publisher","DOI":"10.1136\/thoraxjnl-2015-207775","article-title":"Validation of the DECAF score to predict hospital mortality in acute exacerbations of COPD","volume":"71","author":"Echevarria C","year":"2016","unstructured":"Echevarria C, Steer J, Heslop-Marshall K, et al.. Validation of the DECAF score to predict hospital mortality in acute exacerbations of COPD. Thorax. 2016, 71:133-40. 10.1136\/thoraxjnl-2015-207775","journal-title":"Thorax"},{"key":"ref56","doi-asserted-by":"publisher","DOI":"10.1136\/thoraxjnl-2017-211197","article-title":"Home treatment of COPD exacerbation selected by DECAF score: a non-inferiority, randomised controlled trial and economic evaluation","volume":"73","author":"Echevarria C","year":"2018","unstructured":"Echevarria C, Gray J, Hartley T, et al.. Home treatment of COPD exacerbation selected by DECAF score: a non-inferiority, randomised controlled trial and economic evaluation. Thorax. 2018, 73:713-22. 10.1136\/thoraxjnl-2017-211197","journal-title":"Thorax"},{"key":"ref57","doi-asserted-by":"publisher","DOI":"10.1177\/00185787231209218","article-title":"An international validation of the \"DECAF Score\" to predict disease severity and hospital mortality in acute exacerbation of COPD in the UAE","volume":"59","author":"Almarshoodi K","year":"2024","unstructured":"Almarshoodi K, Echevarria C, Kassem A, Mahboub B, Salameh L, Ward C. An international validation of the \"DECAF Score\" to predict disease severity and hospital mortality in acute exacerbation of COPD in the UAE. 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