RT Journal Article SR Electronic T1 Baby Walkers Delay Motor and Mental Development JF AAP Grand Rounds JO AAP Grand Rounds FD American Academy of Pediatrics SP 1 OP 2 DO 10.1542/gr.3-1-1 VO 3 IS 1 YR 2000 UL http://aapgrandrounds.aappublications.org/content/3/1/1.abstract AB