Benjamin L Hodnett Berrylin Ferguson
10.12688/f1000research.3791.2
F1000Res
2014 Mar 31;3:81.
CC BY
https://pubmed.ncbi.nlm.nih.gov/24795809/
PMC3999928
24795809
Case Report: retained gutta-percha as a cause for persistent maxillary sinusitis and pain
2014