References:

1. Life With Metastatic Breast Cancer. WebMD [uploaded 2020 Jan 28; cited 2020 Jun 05]. Available from: https://www.webmd.com/breast-cancer/treatments-metastatic-breast-cancer#1 Accessed on September 2021.
2. Treatment of Stage IV (Metastatic) Breast Cancer. American Cancer Society [updated 2020 Apr 21; cited 2020 Jun 05]. Available from:https://www.cancer.org/cancer/breast-cancer/treatment/treatment-of-breast-cancer-by-stage/treatment-of-stage-iv-advanced-breast-cancer.html Accessed on September 2021.
3. Treatments for Metastatic Breast Cancer. Susan G. Komen [updated 2020 May 18; cited 2020 Jun 05]. Available from: https://ww5.komen.org/BreastCancer/RecommendedTreatmentsforMetastaticBreastCancer.html Accessed on September 2021.
4. Preusser, M., De Mattos-Arruda, L., Thill, M., Criscitiello, C., Bartsch, R., Ruhstaller, T., de Azambuja, E., & Zielinski, C. C. (2018). CDK4/6 inhibitors in the treatment of patients with breast cancer: summary of a multidisciplinary \ round-table discussion. ESMO open, 3(5), e000368. https://doi.org/10.1136/esmoopen-2018-000368
5. Spring LM, Wander SA, Zangardi M, Bardia A. CDK 4/6 Inhibitors in Breast Cancer: Current Controversies and Future Directions. Curr Oncol Rep. 2019;21(3):25. Published 2019 Feb 26.

References:

1. Life With Metastatic Breast Cancer. WebMD [uploaded 2020 Jan 28; cited 2020 Jun 05]. Available from https://www.webmd.com/breast-cancer/treatments-metastatic-breast-cancer#1 Accessed on September 2021.
2. Treatment of Stage IV (Metastatic) Breast Cancer. American Cancer Society [updated 2020 Apr 21; cited 2020 Jun 05].
   Available from: https://www.cancer.org/cancer/breast-cancer/treatment/treatment-of-breast-cancer-by-stage/treatment-of-stage-iv-advanced-breast-cancer.html Accessed on September 2021.
3. Treatments for Metastatic Breast Cancer. Susan G. Komen [updated 2020 May 18; cited 2020 Jun 05]. Available from: https://ww5.komen.org/BreastCancer/Recommended
   TreatmentsforMetastaticBreastCancer.html Accessed on September 2021.
4. Targeted Therapies to Treat Metastatic Breast Cancer. BreastCancer.Org [updated 2020 Jan 22; Cited 2020 Jun 05].
   Available from: https://www.breastcancer.org/symptoms/types/recur_metast/
   treat_metast/options/targeted Accessed on September 2021.
5. Preusser, M., De Mattos-Arruda, L., Thill, M., Criscitiello, C., Bartsch, R., Ruhstaller, T., de Azambuja, E., & Zielinski, C. C. (2018). CDK4/6 inhibitors in the treatment of patients with breast cancer: summary of a multidisciplinary \ round-table discussion. ESMO open, 3(5), e000368. https://doi.org/10.1136/esmoopen-2018-000368
6. Spring LM, Wander SA, Zangardi M, Bardia A. CDK 4/6 Inhibitors in Breast Cancer: Current Controversies and Future Directions. Curr Oncol Rep. 2019;21(3):25. Published 2019 Feb 26.