RT Journal Article SR Electronic T1 Health Canada has cautioned against use of boric acid–containing products JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1032 OP E1032 DO 10.1503/cmaj.72750 VO 191 IS 37 A1 Christopher Earle YR 2019 UL http://www.cmaj.ca/content/191/37/E1032.abstract