Adherence of Hispanic / Latina Breast Cancer - Patients to Adjuvant Aromatase Inhibitors

* Women with breast cancer seen at the Texas Tech Physicians Breast Care Center will be recruited during their routine follow-up visit with their medical oncologist. * Post - menopausal women with histologically confirmed hormonal positive (ER and/or PR) invasive breast cancer stages I - III with no evidence of metastatic disease (M0). * Patients must be on one of AI (steroidal or non-steroidal). * Patient must have completed local treatment (surgery /radiation) and recovered from all side effects of chemotherapy and surgery. * Patient must be able to complete a demographic and the MMAS - 8 questionnaires in English or Spanish.