PT - JOURNAL ARTICLE AU - Rogelio PĂ©rez-Padilla TI - The authors respond DP - 2007 Mar 01 TA - Respiratory Care PG - 342--343 VI - 52 IP - 3 4099 - http://rc.rcjournal.com/content/52/3/342.short 4100 - http://rc.rcjournal.com/content/52/3/342.full