RT Journal Article SR Electronic T1 Investigating mother-infant interaction. JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 8 OP 9 DO 10.1136/hrt.76.1.8 VO 76 IS 1 A1 Crow, G. YR 1996 UL http://heart.bmj.com/content/76/1/8.abstract AB