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 - 2015 Jan 01 TA - Respiratory Care PG - e17--e19 VI - 60 IP - 1 4099 - http://rc.rcjournal.com/content/60/1/e17.short 4100 - http://rc.rcjournal.com/content/60/1/e17.full