PT - JOURNAL ARTICLE AU - Douglas, Neil J TI - Systematic review of the efficacy of nasal CPAP AID - 10.1136/thx.53.5.414 DP - 1998 May 01 TA - Thorax PG - 414--415 VI - 53 IP - 5 4099 - http://thorax.bmj.com/content/53/5/414.short 4100 - http://thorax.bmj.com/content/53/5/414.full SO - Thorax1998 May 01; 53