Validation of the Symptom Illustration Scale within an electronic Patient-Reported Outcomes Monitoring environment for metastatic breast cancer patients undergoing chemotherapy. - Jo A; Iwamoto T; Suzuki Y; Ogata R; Koike Y; Nomura T; Tanaka K; Miyoshi Y; Hara K; Yoshitomi S; Hikino H; Takahashi H; et al. (Breast cancer (Tokyo, Japan), 2025)