TY  - RPRT
TI  - Immunization status and birth order.
AU  - S J Schaffer
AU  - P G Szilagyi
PY  - 1995
DO  - 10.1001/archpedi.1995.02170200082013
UR  - https://pubmed.ncbi.nlm.nih.gov/7795771/
ID  - 7795771
ER  -