Planned Interim Analysis Results from a Prospective Multicenter Single-Arm Cohort Study of Patients Receiving Endocrine Therapy but Not Radiotherapy after Breast-Conserving Surgery for Early-Stage Breast Cancer with Favorable Biologic FeaturesReshma Jagsi, Mahmoud El‐Tamer, Eleanor Harris et al.|International Journal of Radiation Oncology*Biology*Physics|2019Cited by 6