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Using a metal detector to locate a swallowed ring pull.
Ryan J, Perez-Avila CA, Cherukuri A, Tidey B. Ryan J, et al. Among authors: tidey b. J Accid Emerg Med. 1995 Mar;12(1):64-5. doi: 10.1136/emj.12.1.64. J Accid Emerg Med. 1995. PMID: 7640836 Free PMC article.