TY - JOUR AU - Smith, I E; Shneerson, J M TI - Secondary failure of nasal intermittent positive pressure ventilation using the Monnal D: effects of changing ventilator JO - Thorax VL - 52 PY - 1997 DO - 10.1136/thx.52.2008.S89 L3 - PubMed-ID: 9155860 SP - 89 EP - 91 ER -