[1] Univ Libre Bruxelles, CHU Brugmann, Brussels, Belgium
[2] Univ Athens, Sch Med, Dept Clin Therapeut, Athens, Greece
[3] Catholic Univ Louvain, Clin Univ St Luc, Brussels, Belgium
[4] Univ Marburg, Dept Bone Oncol Endocrinol & Reprod Med, Krankenhaus Nordwest, Frankfurt, Germany
[5] Univ Hosp Coventry & Warwickshire, Coventry, W Midlands, England
[6] Univ Warwick, Warwick Med Sch, Coventry CV4 7AL, W Midlands, England
[7] Clin Genolier, Multidisciplinary Oncol Inst, Breast Ctr, Genolier, Switzerland
[8] Weston Pk Hosp, Acad Unit Clin Oncol, Sheffield, S Yorkshire, England