@misc{indiciae9aafa68798ad, title = {Extraimmunization among US children.}, author = {S M Feikema and R M Klevens and M L Washington and L Barker}, year = {2000}, doi = {10.1001/jama.283.10.1311}, url = {https://pubmed.ncbi.nlm.nih.gov/10714730/}, note = {Source identifier: 10714730} }