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Spontaneous ventilation as a key ventilation technique duri..:

Ranjith K Sivakumar ; Sakthirajan Panneerselvam ; Duraiyarassu Uthaman..
http://www.ijaweb.org/article.asp?issn=0019-5049;year=2019;volume=63;issue=12;spage=1029;epage=1032;aulast=Sivakumar.  , 2019