Scientific Director: Hemato-oncology Service, Fundacion Perez Scremini, Montevideo, Uruguay.
Researcher - University of Cambridge. Member of the scientific committee of the European arm of the International Society for paediatric Oncology (SIOP)
Cancer Control focal point Department of Noncommunicable Diseases Division of Universal Health Coverage (Communicable and Noncommunicable Diseases) World Health Organization
President of SIOP and Professor of Paediatric Oncology at University College London
Lecturer - Department of Child Health, University of Ghana Medical School. Lead consultant - Paediatric Oncology Unit (POU) at the Korle Bu Teaching Hospital, Accra.
Executive Director - Center for Health, Human Rights and Development (CEHURD)
Head - BioInnovate Africa, Former Assistant Executive Secretary of the Uganda National Council for Science and Technology
Chief Nursing Officer-Oncology Zambia. Founding president of the Zambia Oncology Nurses Society,