PT - JOURNAL ARTICLE AU - Richard TY Nataraj AU - Derek A Fladeland AU - Donald W Cockcroft TI - The Necessity of Histology AID - 10.4187/respcare.03223 DP - 2014 Aug 26 TA - Respiratory Care PG - respcare.03223 4099 - http://rc.rcjournal.com/content/early/2014/08/26/respcare.03223.short 4100 - http://rc.rcjournal.com/content/early/2014/08/26/respcare.03223.full