Anglo-Celtic Co-operative Oncology Group;
Prof. Robert C F Leonard

Australia and New Zealand Breast Cancer Trials Group;
Dr. Boon Chua

Borstkanker Onderzoeksgroep Nederland;
Dr. Nicola Russell

Central East European Oncology Group:
Prof. Jacek Jassem

European Organisation for Research and Treatment of Cancer: Dr. Geertjan van Tienhoven
http://www.eortc.be/

GECO Peru
Dr. Henry Gomez Moreno

Hellenic Breast Surgical Society;
Prof. Christos Markopoulos

International Breast Cancer Study Group
Prof. Aron Goldhirsch

Irish Clinical Oncology Research Group;
Dr. Brian Moulton

Japanese Breast Cancer Research Group;
Dr. Masakazu Toi
 
National Cancer Institute of Canada –Cancer Trials Group;
Prof. Tim Whelan

National Cancer Research Institute Breast Cancer Studies Group
Prof. Robert Coleman

Swedish Breast Group;
Prof. Per-Karlsson

Swiss Group for Clinical Cancer Research
Dr Olivia Pagani

Trans-Tasman Radiation Oncology Group (TROG)