PT - JOURNAL ARTICLE AU - Knopke-Mooney, Amy J TI - Oxford Handbook of Respiratory Medicine. DP - 2006 Oct 01 TA - Respiratory Care PG - 1185--1186 VI - 51 IP - 10 4099 - http://rc.rcjournal.com/content/51/10/1185.2.short 4100 - http://rc.rcjournal.com/content/51/10/1185.2.full