Department of Medical Oncology;
Harbin Medical University Cancer Hospital;
Harbin 150081;
China;
Department of Breast Cancer;
the 307th hospital of Chinese People's Liberation Army;
Beijing 100071;
China;
The Fourth Hospital of Hebei Medical University;
Shijiazhuang 050011;
China;
Shenzhen Chipscreen Biosciences;
Shenzhen 518057;
China;
Advanced; breast; cancer; hormone; receptor-positive; chidamide; exemestane;