ecrin-mdr-crcClinical2020Breast cancerBreast CancerInterventionalhttps://newmdr.ecrin.org/Study/2697768China10ECRIN MDRRecruitingfalseClinical research of probiotics on intestinal microecology and prognosis in breast cancer patients undergoing chemotherapy: a prospective randomized controlled trialInterventions: control group:chemotherapy;experimental group:Chemotherapy + probiotics Primary outcome(s): Immune index Study Design: Parallel2020-10-152697768ChiCTR2000037383