Association between Ultrasound Features and the 21-Gene Recurrence Score Assays in Patients with Oestrogen Receptor-Positive, HER2-Negative, Invasive Breast Cancer

• Eun Young Chae,

  Affiliation Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Woo Kyung Moon ,

  Contributed equally to this work with: Woo Kyung Moon, Hak Hee Kim

  * E-mail: hhkim@amc.seoul.kr (HHK); moonwk@snu.ac.kr (WKM)

  Affiliation Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea

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• Hak Hee Kim ,

  Contributed equally to this work with: Woo Kyung Moon, Hak Hee Kim

  * E-mail: hhkim@amc.seoul.kr (HHK); moonwk@snu.ac.kr (WKM)

  Affiliation Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Won Hwa Kim,

  Affiliation Department of Radiology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea

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• Joo Hee Cha,

  Affiliation Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Hee Jung Shin,

  Affiliation Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Woo Jung Choi,

  Affiliation Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Wonshik Han,

  Affiliation Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea

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• Dong-Young Noh,

  Affiliation Department of Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea

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• Sae Byul Lee,

  Affiliation Department of Surgery, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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• Sei Hyun Ahn

  Affiliation Department of Surgery, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Republic of Korea

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