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Rare occupational cause of nasal septum perforation: Nickel..:

Ertugrul Cagri Bolek ; Abdulsamet Erden ; Cagri Kulekci..
http://ijomeh.eu/Rare-occupational-cause-of-nasal-septum-perforation-Nickel-exposure,65297,0,2.html.  , 2017