PT - JOURNAL ARTICLE AU - H.C. George Wong TI - Long-term use of diphenhydramine AID - 10.1503/cmaj.1150066 DP - 2015 Oct 06 TA - Canadian Medical Association Journal PG - 1078--1078 VI - 187 IP - 14 4099 - http://www.cmaj.ca/content/187/14/1078.2.short 4100 - http://www.cmaj.ca/content/187/14/1078.2.full SO - CMAJ2015 Oct 06; 187