Development of a risk-stratification scoring system for predicting lymphovascular invasion in breast cancer oleh Ma-yi-di-li Ni-jia-ti, Di-li-a-re-mu Ai-hai-ti, Ai-si-ka-er-jiang Huo-jia, Pa-li-dan-mu Wu-mai-er, A-bu-du-ke-you-mu-jiang A-bu-li-zi, Yu Shi, Nu-er-a-mi-na Rou-zi, Wen-jing Su, Guo-zhao Dai, Mai-he-mi-ti-jiang Da-mo-la