TY  - RPRT
TI  - Ambulation problems in very young children.
AU  - E W JOHNSON
AU  - M H SPIEGEL
PY  - 1961
DO  - 10.1001/jama.1961.03040100022007
UR  - https://pubmed.ncbi.nlm.nih.gov/13790260/
ID  - 13790260
ER  -