. João Gama Marques (MD, MSc, PhD) graduated from medical school at Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal (2006), where he has also been teaching psychiatry for years (2009). He finished his residency in adult psychiatry at Hospital Júlio de Matos, Centro Hospitalar Psiquiátrico de Lisboa, Lisbon, Portugal (2013), where he develops his clinical and research work. João Gama Marques was awarded with the European Federation of Psychiatric Trainees’ scholarship in London, England, United Kingdom (2012); the Japanese Society of Psychiatry and Neurology’s fellowship in Tokyo, Japan (2016); and the European College of Neuropsychopharmacology’s scholarship in Oxford, England, United Kingdom (2016). João Gama Marques received his Psychopharmacology Masters (MSc) from the Neuroscience Educational Institute in Carlsbad, California, United States of America (2018); and completed his Neuroscience Doctorate (PhD) at Faculdade de Medicina, Universidade de Lisboa, Lisbon (2020). João Gama Marques has been working in Hospital da Luz, Lisboa, Portugal since 2013 and achieved the position of graduate consultant psychiatrist at Hospital Júlio de Matos, Centro Hospitalar Psiquiátrico de Lisboa, Lisbon, Portugal, since 2023. João Gama Marques main interests are focused in clinical and research work with the people living homeless in Lisboa, Portugal, affected by primary (idiopathic) and secondary (organic) psychosis, from schizophrenia and schizoaffective disorders spectra.