Anthracycline-containing regimens or taxane versus S-1 as first-line chemotherapy for metastatic breast cancer.
Hirofumi MukaiYukari UemuraHiromitsu AkabaneTakanori WatanabeYoungjin ParkMasato TakahashiYoshiaki SagaraReiki NishimuraTsutomu TakashimaTomomi FujisawaYasuo HozumiTakuya KawaharaPublished in: British journal of cancer (2021)
The University Hospital Medical Information Network, Japan: UMIN000005449. This trial was registered on 15 April, 2011.