PEDIATRICS Vol. 100 No. 2 August 1997, pp. 276
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Dover, DE 19904
Linda Fetters, PhD, PT
Boston University
Department of Physical Therapy
Child Development Unit
Children's Hospital, Boston
Harvard Medical School
Boston, MA 02215
Edward Z. Tronick, PhD
Child Development Unit
Children's Hospital, Boston
Harvard Medical School
Boston, MA 02215