Study of Safety and Efficacy of Letrozole Monotherapy as Second-line Endocrine Therapy in Postmenopausal Patients With Advanced Breast Cancer Who Received Previous Anti-estrogen Treatment

Novartis Investigative Site, Nagoya

Novartis Investigative Site, Nagoya

Novartis Investigative Site, Kashiwa

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Novartis Investigative Site, Sapporo

Novartis Investigative Site, Sapporo

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