Nadhim Muhammad Askar, Widyanti Soewoto, and Brian Wasita, “Dynamic Coupling of Systemic and Intratumoral Estradiol in HER2-Positive and Triple-Negative Breast Cancer: A Validation Study of a Non-Invasive Surrogate”, Bioscmed, vol. 10, no. 1, pp. 52–62, Oct. 2025, doi: 10.37275/bsm.v10i1.1476.