4Cook DJ,Kollef MH.Risk factors for ICU-acquired pneumonia,JAMA,1998;279:1605～1606.
5Kollef MH.The prevention of vontilatro-associated pneumonia.N Eng J Med,1999;340:627～634.
6Brochhard L,Mancebo J,Wysocki M,et al.Noninvasive ventilation for acute exacerbations of chronic obstructive pulmonary disease.N Engl J Med,1995;333:817～822.
7Pingleton SK,Fagon JY,Leeper KV Jr.Patient selection for clinical investigation of ventilator-associated pneumonia.Criteria for evaluating diagnostic techniques.Chest,1992;102: 553s～556s.
8Nava S,Ambrosino N,Clini E,et al.Noninvasive mechanical ventilation in the weaning of patients with respiratory failure due to chronic obstructive pulmonary disease.A randomized,controlled trial.Ann Intern Med,1998;128:721～728.
9Plant PK,Elliott MW.Non-invasive ventilation in acute exacerbations of COPD.Q J Med,1998;91:657～660.
10Girault C,Daudenthun I,Chevron V,et al Noninvasive ventilation as a systematic extubation and weaning technique in acute-on chronic respiratory failure:a prospective,randomized controlled study.Am J Respir Crit Care Med,1999;160:86～92.
7Kasper LH , Buzoni-Gatel D. Some Opportunistic Parasitic Infections in AIDS.. Candidiasis , Pneumocystsis , Cryptosporidiosis , Toxoplasmosis. Parasitol Today , 1998 ,14(4):150-156.
8Derouin F, Leport C, Pueyo S, et al. Predictive value of Toxoplasma gond Ⅱ antibody titres om the occurrence of toxoplasmic encephalitis in HIV- infected patients. AIDS,1996,10(13):1 521-1 527.
9Anand L, Brajachard NG, Dhanachand CH. Cryptosporidiosis in HIV infection. J Commun Dis , 1996,28(4) : 241-244.
