Are Lymph Node Characteristics on Axillary Ultrasound Associated with ≥3 Positive Lymph Nodes in Patients Managed by the American College of Surgeons Oncology Group Z0011 Trial Criteria? - Rooney EG; Fleming MM; Patel JG; Clifford K; Kim C; Chen Z; Gillespie TW; Arciero CA; Subhedar PD (The American surgeon, 2018)