Axillary Radiotherapy or Axillary Lymph Node Dissection in Patients With Clinically Node- Positive Breast Cancer Undergoing Upfront Tailored Axillary Surgery

Walter Reed National Military Medical Center, Bethesda, Maryland, United States

Duke University/Duke Cancer Center, Durham, North Carolina, United States

Fox Chase Cancer Center, Philadelphia, Pennsylvania, United States

Swedish Cancer Institute, Seattle, Washington, United States

KH Dornbirn, Dornbirn, Austria

LKH Feldkirch, Feldkirch, Austria

MUI - Univ. Klinik f. Frauenheilkunde Innsbruck, Innsbruck, Austria

Ordensklinikum Linz, Linz, Austria

Medical University Vienna, Department of Gynecology, Vienna, Austria

Medical University Vienna, Department of Surgery, Vienna, Austria

CIUSSS du Centre Ouest-de-l 'Ile-de-Montréal, Montreal, Canada

Breast Centre of Clinical Hospital, Rijeka, Rijeka, Croatia

University Hospital Heidelberg, Women's Clinic, Heidelberg, Germany

Brustzentrum Heidelberg Klinik St. Elisabeth GmbH, Heidelberg, Germany

Breast Center Osnabrück, Osnabrück, Germany

HELIOS Universitätsklinikum Wuppertal, Wuppertal, Germany

"Alexandra" Hospital, Athens, Athens, Greece

University Hospital of Heraklion, Heraklion, Greece

University Hospital of Larissa, Larissa, Greece

Cork University Hospital, Cork, Ireland

Beaumont Hospital Dublin, Dublin, Ireland

St- Luke's Hospital Dublin, Dublin, Ireland

St. James's Hospital Dublin, Dublin, Ireland

St. Vincent's University Hospital, Dublin, Ireland

University Hospital Galway, Galway, Ireland

Istituto Oncologico Veneto IRCCS, Padova, Italy

Policlinico Universitario "Agostino Gemelli, Rome, Italy

Pauls Stradiņš Clinical University Hospital, Riga, Latvia

Kantonsspital Baden, Baden, Switzerland

Breast Surgery Service, University Hospital Basel, Basel, Switzerland

University Hospital of Bern (Inselspital), Bern, Switzerland

Clinique des Grangettes, Chêne-Bougeries, Switzerland

Graubünden Cantonal Hospital, Chur, Switzerland

Spital Thurgau, Frauenfeld, Switzerland

Hôpitaux Universitaires de Genève, Geneva, Switzerland

Clinique de Genolier, Genolier, Switzerland

Hirslandenklinik St. Anna, Lucerne, Switzerland

Kantonsspital Luzern, Lucerne, Switzerland

Centro di Senologia della Svizzera Italiana, Lugano, Switzerland

Ticino Breast Center, Lugano, Switzerland

Hôpital Neuchâtelois, Neuchâtel, Switzerland

Bethesda Hospital Basel, Pratteln, Switzerland

Kantonsspital St. Gallen, Sankt Gallen, Switzerland

Tumor-& Brustzentrum Ostschweiz St. Gallen, Sankt Gallen, Switzerland

Schaffhausen Cantonal Hospital, Schaffhausen, Switzerland

Spital Limmattal, Schlieren, Switzerland

Hôpital du Valais, Hôpital de Sion, Sion, Switzerland

Kantonsspital Winterthur, Winterthur, Switzerland

Spital Zollikerberg, Zollikerberg, Switzerland

Brustzentrum Zürich (Seefeld), Zurich, Switzerland

Stadtspital Triemli, Zurich, Switzerland

University Hospital Zürich, Zurich, Switzerland

İstanbul Bağcılar Training and Research Hospital, Istanbul, Turkey (Türkiye)

Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital, Istanbul, Turkey (Türkiye)