Name Info Provider Link
subscription/membership/fee required HighWire https://emj.bmj.com/lookup/pmidlookup?view=long&pmid=18212160
Foreign Bodies free resource MedlinePlus Health Information https://medlineplus.gov/foreignbodies.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18212160.ui