RT Journal Article SR Electronic T1 Breast-feeding by mothers positive for HBsAG JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1344a OP 1344 VO 116 IS 12 A1 Larke, R. P. A1 Haworth, J. C. A1 Read, J. H. YR 1977 UL http://www.cmaj.ca/content/116/12/1344a.abstract