From: 02/12/2017 to: 04/12/2017 ESO-ESMO-RCE Clinical Update on Rare Adult Solid Cancers, Milan, Italy                                        From: 15/12/2017 to: 18/12/2017 6th Arab and Southern European Countries Masterclass in Clinical Oncology, Limassol, Cyprus                                        From: 22/01/2018 to: 26/01/2018 University Post-graduate Course - Clinical Oncology: Sarcomas, Milan, Italy                                        From: 05/02/2018 to: 09/02/2018 University Post-graduate Course - Clinical Oncology: Head & neck cancers, Milan, Italy                                        From: 23/02/2018 to: 25/02/2018 3rd ESO Masterclass in Cancer Patient Advocacy , Lisbon, Portugal                                        From: 24/03/2018 to: 29/03/2018 17th ESO-ESMO Masterclass in Clinical Oncology, Nauen OT Groß Behnitz (Berlin area), Germany                                        From: 24/03/2018 to: 29/03/2018 11th ESO-EONS Masterclass in Oncology Nursing , Nauen OT Groß Behnitz (Berlin area), Germany                                        From: 18/04/2018 to: 22/04/2018 4th ESO-ESMO Latin-American Masterclass in Clinical Oncology, Mexico City, Mexico                                        From: 17/05/2018 to: 18/05/2018 8th ESO-CNIO Conference on Familial Cancer, Madrid, Spain                                        From: 18/05/2018 to: 22/05/2018 3rd Masterclass on Systematic Reviews in Cancer Care, Guidelines and Research, Belfast, United Kingdom                                        From: 15/06/2018 to: 20/06/2018 5th ESO-ESMO Eastern Europe and Balkan Region Masterclass in Medical Oncology, Belgrade, Republic of Serbia                                        From: 16/06/2018 to: 21/06/2018 7th ESO-SIOP Europe Masterclass in Paediatric Oncology, Nauen OT Groß Behnitz (Berlin area), Germany                                        From: 19/07/2018 to: 25/07/2018 ESMO-ESO Course on Medical Oncology for Medical Students, Valencia, Spain                                        From: 27/08/2018 to: 07/09/2018 ESO-ESSO-ESTRO Multidisciplinary Course in Oncology for Medical Students, Poznan, Poland                                        From: 20/09/2018 to: 22/09/2018 1st ESO-EONS Eastern Europe and Balkan Region Masterclass in Oncology Nursing, Budapest, Hungary                                        From: 27/09/2018 to: 29/09/2018 Update Skills in Head and Neck Surgery and Oncology, Leipzig, Germany                                        From: 6/10/2018 to: 8/10/2018 4th ESO-ESMO Breast Cancer in Young Women International Conference, Lugano, Switzerland                                        From: 30/10/2018 to: 31/10/2018 10th Clinical Oncology Update - Onkologia 2018, Krakow, Poland                                        From: 10/11/2018 to: 13/11/2018 ESO-ASCO Masterclass in Clinical Oncology, Yerevan, Armenia

Fifty experts were invited to attend the 2014 meeting and contribute to the discussion. Participants were selected based on the following criteria:

 Leading cancer clinicians and researchers who have partially or already participated in the first edition of WOF, with the addition of new experts related to the topic to be discussed.

 Leaders who represent important international organizations.
Matti Aapro, Clinique de Genolier, Switzerland
Andree Blaukat, Merck Serono, Germany
Christopher Booth, Queen’s University, Canada
Riccardo Braglia, Helsinn, Switerland
Otis Brawley, American Cancer Society, USA
Franco Cavalli, European School of Oncology, Switzerland
Eduardo Cazap, Latin-American & Caribbean Society of Medical Oncology (SLACOM), Argentina
Thomas Cerny, HCARE-KSSG-ONKO, Switzerland
Alberto Costa, European School of Oncology, Italy and Switzerland
Alexander M.M. Eggermont, Gustave Roussy Cancer Campus Grand Paris, France
Nelly Enwerem-Bromson, IAEA, Austria
Mary Gospodarowicz, Princess Margaret Cancer Centre, Canada
Axel Hanauske, Lilly Deutschland GmbH, Germany
Augustin Lage, Center of Molecular Immunology (CIM), Cuba
Jonathan Licht, Northwestern University, USA
Ian Magrath, International Network for Cancer, Belgium
Alex Matter, Experimental Therapeutic Centre & D3, A*STAR, Singapore
Rene Medema, Netherlands Cancer Institute, The Netherlands
Hitoshi Nakagama, National Cancer Center Research Institute, Japan
Douglas Noonan, Università degli Studi dell’Insubria, Italy
Jakob Passweg
, Universitätspital Basel, Switzerland
Pier Giuseppe Pelicci, European Institute of Oncology, Italy
Martine Piccart, Institute Jules Bordet, Belgium
Bob Pinedo, VU Medical Center/Fundashon Prevenshon, The Netherlands/Curacao
Michael Rawlins, UK
Rengaswamy Sankaranarayanan, International Agency for Research on Cancer (IARC), France
Luiz Santini, INCA – Brazilian National Cancer Institute, Brazil
Richard Schilsky, American Society of Clinical Oncology, USA
Steve Shak, Genomic Health, USA
Andreas Ullrich, World Health Organization, Switzerland
Chris Wild, International Agency for Research of Cancer (IARC), France
Paul Workman, The Institute of Cancer Research, UK
Laurence Zitvogel, Gustav Roussy Cancer Campus Grand Paris, France
Walter Zoss, Network of National  Cancer Institutes of the Union of the South American Nations, Brazil

ESO Observers
Andrea Decensi, E. O. Espedali Galliera, Italy
Olivia Pagani, Oncology Institute of Southern Switzerland, Switzerland
Anna Wagstaff, Cancer World Magazine, UK