Dr. Luis Nacul (MD, PhD) is the Principal Investigator of the Complex Chronic Diseases Research Program. He is a Clinical Associate Professor at the University of British Columbia. He has been researching ME/CFS internationally, and practicing as a general physician and in the field of ME/CFS and other complex chronic diseases. He also has been the co-founder and Director of CureME Research Programme at the Clinical Research Department, at the London School of Hygiene and Tropical Medicine in the UK. Dr Nacul has worked in in Brazil, UK and Canada, where he had served as medical director for CCDP for nearly 4 years.