RT Journal Article SR Electronic T1 Baby walkers and the premature infant JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 609a OP 610 VO 139 IS 7 A1 Downer, H. A1 Inwood, S. A1 Knox, K. YR 1988 UL http://www.cmaj.ca/content/139/7/609a.abstract