we evaluated 22 exhaled-air pulmonary resuscitators ( eaprs ) of two types ( type i , face mask -- 17 units from 15 manufacturers ; type ii , face shield -- 5 units from 4 manufacturers ) and 13 disposable manual ( bag-mask ) pulmonary resuscitators ( dmprs ) of three sizes ( adult -- 7 units from 7 manufacturers , child -- 4 units from 4 manufacturers , and infant -- 2 units from 2 manufacturers .
C0008059
child
C0021270
infant