Estevão, R. A. F., Nazário, A. C. P. and Baracat, E. C. (2007) “Effect of oral contraceptive with and without associated estriol on ultrasound measurements of breast fibroadenoma: randomized clinical trial”, São Paulo Medical Journal, 125(5), pp. 275–280. Available at: https://periodicosapm.emnuvens.com.br/spmj/article/view/2160 (Accessed: 16 October 2025).