RT Journal Article SR Electronic T1 Correction: Nurse home visiting and prenatal substance use in a socioeconomically disadvantaged population in British Columbia: analysis of prenatal secondary outcomes in an ongoing randomized controlled trial JF CMAJ Open JO CMAJ FD Canadian Medical Association SP E1040 OP E1040 DO 10.9778/cmajo.20210288 VO 9 IS 4 YR 2021 UL http://www.cmajopen.ca/content/9/4/E1040.abstract AB