Nasal intermittent positive pressure ventilation is older than you think

References 

1. Robert D, Argaud L. Clinical review: long-term noninvasive ventilation 2007;11:210.
2. Affeldt J. In: Round Table Conference on Poliomyelitis Equipment, Roosevelt Hotel, New York City, Sponsored by the National Foundation for Infantile Paralysis Inc. May 28-29. 1953;
3. Bach JR, Alba AS, Saporito LR. Intermittent positive pressure ventilation via the mouth as an alternative to tracheostomy for 257 ventilator users. Chest. 1993;103:174–182
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4. Bach JR. The history of mechanical ventilation and respiratory muscle aids. In:  Bach JR editors. Noninvasive mechanical ventilation. Philadelphia: Hanley and Belfus; 2002;p. 45–72