Obesity-associated systemic interleukin-6 promotes pre-adipocyte aromatase expression via increased breast cancer cell prostaglandin E2 production.
Bowers, L. W., Brenner, A. J., Hursting, S. D., Tekmal, R. R. & deGraffenried, L. A.
Breast Cancer Res. Treat. 149(1):49-57 (2014). PMID: 25476497; PMCID: PMC4409140 
https://www.ncbi.nlm.nih.gov/pubmed/?term=25476497