{{Cite journal| doi = 10.1016/s0300-9572(97)00091-9| issn = 0300-9572 (Print) 0300-9572 (Linking)| volume = 36| issue = 1| pages = 23–7| last1 = Osterwalder| first1 = J. J.| last2 = Schuhwerk| first2 = W.| title = Effectiveness of mask ventilation in a training mannikin. A comparison between the Oxylator EM100 and the bag-valve device| journal = Resuscitation| date = 1998-04-21| pmid = 9547840}}