Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Young-Joon Kang and Han-Byoel Lee and Yun Gyoung Kim and JaiHong Han and Yumi Kim and Tae-Kyung Yoo and Eun-Shin Lee and Hyeong-Gon Moon and Dong-Young Noh and Wonshik Han,Ki-67 Expression is a Significant Prognostic Factor Only When Progesterone Receptor Expression is Low in Estrogen Receptor-Positive and HER2-Negative Early Breast Cancer,Journal of Oncology,1687-8450,Hindawi Limited,2019-12-28,2019,,1-8,https://cir.nii.ac.jp/crid/1873679867524796544,https://doi.org/10.1155/2019/7386734