Thi Quynh, Nguyen, AND 		Quang Dien, Trinh.
" Factors Associated with Lymph Node Metastasis  in Special Types of Invasive Breast Cancer  at National Cancer Hospital in the Period of 2018 - 2021" <em>VNU Journal of Science: Medical and Pharmaceutical Sciences</em> [Online], Volume 37 Number 4 (5 December 2021)