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subscription/membership/fee required Atypon https://journals.sagepub.com/doi/10.1177/2050640619836052?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
Foreign Bodies free resource MedlinePlus Health Information https://medlineplus.gov/foreignbodies.html
free resource PubMed Central https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31065372/
free resource Europe PubMed Central https://europepmc.org/abstract/MED/31065372
free resource Wiley https://onlinelibrary.wiley.com/doi/10.1177/2050640619836052