1. Department of Internal Medicine and Medical Specialties (DIMI), School of Medicine, University of Genova, Genova, Italy
2. Department of Medical Oncology, U. O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
3. U. O. Epidemiologia Clinica, IRCCS Ospedale Policlinico San Martino, Genova, Italy
4. Breast Medical Oncology Clinic, Institut Jules Bordet, Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Brussels, Belgium
5. Department of Medical Oncology, Universite Paris Cité, Institut Curie, Paris, France
6. Division of Breast Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
7. Cancer Survivorship Program–Molecular Predicitors and New Targets in Oncology, INSERM Unit 981, Gustave Roussy, Villejuif, France
8. Susanne Levy Gertner Oncogenetics Unit, Danek Gertner Institute of Human Genetics, Chaim Sheba Medical Center Affiliated to Tel Aviv University, Tel Hashomer, Israel
9. Department of Molecular Pathology, Netherlands Cancer Institute, Amsterdam, the Netherlands
10. Department of Breast Cancer and Reconstructive Surgery, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
11. Hereditary Cancer Genetics Unit, Medical Oncology Department, Vall d´Hebron University Hospital, Vall d´Hebron Institute of Oncology, Barcelona, Spain
12. Department of General Medical Oncology and Multidisciplinary Breast Center, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
13. Department of Medical Oncology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India
14. Department of Hematology and Medical Oncology, Cleveland Clinic Taussig Cancer Institute, Cleveland, Ohio
15. Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
16. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
17. Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
18. Department of Oncology and Haematology, Azienda Ospedaliero–Universitaria di Modena, Modena, Italy
19. Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
20. Department of Surgery, Leon Berard Cancer Center, Lyon, France
21. Gynecologic Oncology Department, European Institute of Oncology (IRCCS), Milan, Italy
22. Cancer Genetics Unit, Bergonie Institute, Bordeaux, France
23. Hereditary Breast and Ovarian Cancer Unit and General Surgery 3–Senology, Surgical Department, Fondazione IRCCS Policlinico San Matteo, and University of Pavia, Pavia, Italy
24. Breast Oncology Unit, Sharett Institute of Oncology, Hadassah University Hospital, and Faculty of Medicine, Hebrew University, Jerusalem, Israel
25. UO Gynecology, Department of Medicine and Surgery, University of Milan–Bicocca, IRCCS San Gerardo dei Tintori, Monza, Italy
26. Stroll Cancer Prevention Centre, Jewish General Hospital, and McGill University Medical School, Montreal, Quebec, Canada
27. Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
28. IFOM ETS, AIRC Institute of Molecular Oncology, Milan, Italy
29. Department of Oncology, Mayo Clinic College of Medicine, Rochester, Minnesota
30. Dipartimento di Scienze Chirurgiche, Oncologiche, e Gastroenterologiche, Università di Padova, Padova, Italy
31. Oncologia 2, Istituto Oncologico Veneto IOV-IRCCS, Padova, Italy
32. Department of Oncology/Pathology, Karolinska Institute, and Breast Center, Karolinska University Hospital, Stockholm, Sweden
33. Department of Medical Oncology, Smilow Cancer Hospital at Yale New Haven, New Haven, Connecticut
34. Breast Cancer Center, Hospital Zambrano Hellion–TecSalud, Tecnologico de Monterrey, Monterrey, Mexico
35. Department of Radiological, Oncological, and Pathological Sciences, Sapienza University of Rome, Rome, Italy
36. Division of Oncology, Department of Hematology, Oncology, and Dermatology, Umberto 1 University Hospital, Rome, Italy
37. Department of Medical Oncology, Centro di Riferimento Oncologico di Avano (CRO) IRCCS, Aviano, Italy
38. Department of Medicine, University of Udine, Udine, Italy
39. Department of Radiology and Oncology, Instituto do Câncer do Estado de São Paulo, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
40. Department of Oncology-Pathology, Laboratory of Translational Fertility Preservation, Karolinska Institute, Stockholm, Sweden
41. Department of Reproductive Medicine, Karolinska University Hospital, Stockholm, Sweden
42. First Department of Oncology, Comenius University and St Elisabeth Cancer Institute, Bratislava, Slovakia
43. Department of Obstetrics and Gynecology, Ludwig Maximilian University (LMU) Hospital, LMU Munich, Germany
44. Department of Medical Oncology, Azienda Ospedaliera Papa Giovanni XXIII, Bergamo, Italy
45. Department of Medical Oncology, Hospital of Prato, Azienda USL Toscana Centro, Italy
46. Department of Medical Oncology, Centre Henri Becquerel, Rouen, France
47. Department of Medical Oncology, Davidoff Center, Rabin Medical Center, Petah Tikva, Tel Aviv University, Tel Aviv, Israel
48. Department of Medical Oncology, University of Naples Federico II, Napoli, Italy
49. Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
50. Department of Experimental and Clinical Biomedical Sciences M. Serio, University of Florence, and Radiation Oncology Unit, Oncology Department, Florence University Hospital, Florence, Italy
51. Department of Oncology and Radiotherapy, Medical University of Gdańsk, Gdańsk, Poland
52. Early Phase Clinical Trials Centre, Medical University of Gdańsk, Gdańsk, Poland
53. Department of Medical Oncology and Breast Surgery, Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCL), Brussels, Belgium
54. Oncofertility Consortium and Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, East Lansing
55. Department of Medical Oncology, IRCCS Istituto Romagnolo per lo Studio dei Tumori Dino Amadori, Meldola, Italy
56. Oncology Division, Tel Aviv Sourasky Medical Center, Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
57. Cairo Oncology Center, Cairo, Egypt
58. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
59. for the BRCA BCY Collaboration