Journal of International Oncology
The landscape of palliative systemic therapy and overall survival analysis of elderly patients with advanced breast cancer in China National Cancer Center
Guan Xiuwen, Ma Fei, Xu Binghe
Journal of International Oncology . 2019, (11): 657 -661 .  DOI: 10.3760/cma.j.issn.1673-422X.2019.11.003