@misc{indiciaeaeb4bf8a1318, title = {Isolated sphenoiditis: a diagnostic problem.}, author = {A C Urquhart and G Fung and W A McIntosh}, year = {1989}, doi = {10.1017/s0022215100156786}, url = {https://pubmed.ncbi.nlm.nih.gov/2754325/}, note = {Source identifier: 2754325} }