A randomized clinical trial of negative pressure ventilation in severe chronic obstructive pulmonary disease: Design and methods
1991 ◽
Vol 44
(6)
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pp. 483-496
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2019 ◽
Vol 19
(2)
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pp. 68-72
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2018 ◽
Vol 198
(5)
◽
pp. 620-628
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1992 ◽
Vol 146
(3)
◽
pp. 722-729
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1988 ◽
Vol 138
(6)
◽
pp. 1515-1518
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