PT - JOURNAL ARTICLE AU - Thomas D Berlin TI - The First Necessity of Progress AID - 10.4187/respcare.05913 DP - 2017 Dec 01 TA - Respiratory Care PG - 1613--1614 VI - 62 IP - 12 4099 - http://rc.rcjournal.com/content/62/12/1613.short 4100 - http://rc.rcjournal.com/content/62/12/1613.full