Factors associated with underimmunization at 3 months of age in four medically underserved areas.
Barbara H Bardenheier, Hussain R Yusuf, Jorge Rosenthal, Jeanne M Santoli, Abigail M Shefer, Donna L Rickert, and Susan Y Chu
Public Health Rep. 2004 Sep–Oct; 119(5): 479–485. doi: 10.1016/j.phr.2004.07.005.PMCID: PMC1497657