An Open Label Non-Interventional Evaluation of the Effect of Adjuvant Hormonal Treatment of Postmenopausal Women Wih Early Breast Cancer With Aromatase Inhibitors on Bone Mineral Density and Bone Fracture Rate in Daily Practice

Inclusion Criteria: * Women aged 55-65 years, diagnosed with invasive early breast cancer: - Surgery, chemo- and/or radiotherapy concluded less than 6 months ago * Women with hormone-independent breast cancer: - Surgery, chemo- and/or radiotherapy concluded before 24-36 months or 54-66 months * Women with hormone-dependent breast cancer:- Adjuvant therapy with tamoxifen initiated before 24-36 and 54-66 months or - Adjuvant therapy with aromatase inhibitor initiated before 24-36 and 54-66 months or - Switch from tamoxifen to aromatase inhibitor initiated before 24-36 months Exclusion Criteria: * Women receiving active treatment for osteoporosis * Women with any evidence of breast cancer recurrence