Digital Health Intervention to Improve Health Care and Outcomes for Breast Cancer Patients

The investigators defined ePRO intervention as a weekly register of breast cancer patients' symptoms and supportive care needs using the study ePRO App combined with proactive follow-up by nurses guided by predefined clinical algorithms and a weekly cellphone message providing an educational video from a recognised cancer association or health institution. The intervention will be provided for six months with additional three months of post-intervention observation.