[1] Int Breast Canc Study Grp, Program Young Patients, Bern, Switzerland
[2] Univ Milano Bicocca, Dept Stat & Quantitat Methods, Unit Biostat Epidemiol & Publ Hlth, Milan, Italy
[3] European Inst Oncol IRCCS, Div Med Senol, IEO, Milan, Italy
[4] Osped Multimed, Breast Canc Unit, Castellanza, VA, Italy
[5] Lindenhofgrp, Div Oncol Oncocare, Klin Engeried, Bern, Switzerland
[6] Osped St Anna, Med Oncol Unit, Como, Italy
[7] AUSL Romagna, Dept Med Oncol, Osped Infermi, Rimini, Italy
[8] Univ Clin Med Oncol, Inselspital, Bern, Switzerland
[9] CRO, Dept Med Oncol, Aviano, Italy
[10] Azienda Sanitaria DellAlto Adige, Dept Med Oncol, Bolzano, Italy
[11] Osped Inferm Biella, Dept Med Oncol, Biella, Italy
[12] Ist Sci Romagnolo Studio & Cura Tumori IRCCS, Dept Med Oncol, Meldola, Italy
[13] ASST Spedali Civili Brescia, Breast Unit, Brescia, Italy
[14] Vito Fazzi Hosp, UO Oncol Med, Lecce, Italy
[15] Spital STS, Med Oncol, Thun, Switzerland
[16] Azienda ULSS 9, Dept Med Oncol, Treviso, Italy
[17] Tumor & Breast Ctr ZeTup, St Gallen, Switzerland
[18] Univ Politecn Marche, Dept Med Oncol, AOU Osped Riuniti Ancona, Ancona, Italy
[19] Clin Luganese Moncucco, Radiotherapy Serv, Lugano, Switzerland
[20] Int Breast Canc Study Grp, Qual Life Off, Bern, Switzerland
[21] Dana Farber Canc Inst, Dept Med Oncol, Boston, MA 02115 USA
[22] Harvard Med Sch, Dept Med, Brigham & Womens Hosp, Boston, MA 02115 USA
[23] Int Breast Canc Study Grp, Bern, Switzerland
[24] Inst Oncol, Bellinzona, Switzerland
[25] Breast Unit Southern Switzerland, Bellinzona, Switzerland
[26] MultiMedica, Milan, Italy
[27] Geneva Univ Hosp, Geneva, Switzerland