MeSH terms
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Aged, 80 and over
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Antineoplastic Combined Chemotherapy Protocols
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Breast Neoplasms* / drug therapy
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Breast Neoplasms* / pathology
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Female
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Humans
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Piperazines / therapeutic use
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Pyridines / therapeutic use
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Receptor, ErbB-2
Substances
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palbociclib
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Pyridines
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Piperazines
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Receptor, ErbB-2