Comment on

• Suppression of plasma estrogen levels by letrozole and anastrozole is related to body mass index in patients with breast cancer.

  Folkerd EJ, Dixon JM, Renshaw L, A'Hern RP, Dowsett M. Folkerd EJ, et al. J Clin Oncol. 2012 Aug 20;30(24):2977-80. doi: 10.1200/JCO.2012.42.0273. Epub 2012 Jul 16. J Clin Oncol. 2012. PMID: 22802308
• Need for estradiol assays with a lower functional sensitivity in clinical studies examining postmenopausal women treated with aromatase inhibitors.

  Pauwels S, Lintermans A, Neven P, Verhaeghe J, Jans I, Billen J, Vanderschueren D, Vermeersch P. Pauwels S, et al. J Clin Oncol. 2013 Feb 1;31(4):509. doi: 10.1200/JCO.2012.46.2622. Epub 2012 Dec 26. J Clin Oncol. 2013. PMID: 23270000 No abstract available.