References:
1. Demay, R. The Art and Science of Cytopathology. 1996.
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3307464/
3 https://www.dovemed.com/diseases-conditions/oncocytic-carcinoma-salivary-gland/
4. https://link.springer.com/chapter/10.1007/978-0-387-76623-2_8
5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1564019/