| Literature DB >> 3941880 |
Abstract
The United States of America changed the composition of the penny in 1982. It is now a copper-plated, zinc-based coin. Erosions of the edge of this new coin were observed when it was impacted in the esophagus of a 13-month-old child.Entities:
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Year: 1986 PMID： 3941880 DOI： 10.1148/radiology.158.2.3941880
Source DB: PubMed Journal: Radiology ISSN： 0033-8419 Impact factor: 11.105