![Gary Brennan](https://ipwso.org/wp-content/uploads/2021/02/Gary.png)
![Gary Brennan](https://ipwso.org/wp-content/uploads/2021/02/Gary.png)
![Brian Hughes](https://ipwso.org/wp-content/uploads/2021/02/Brian-Hughes.png)
Brian Hughes
Member of the Advisory Group on “Research on specialist services for people with PWS”. Brian Hughes is Professor of Psychology at the National University of Ireland, Galway. He is a specialist in stress psychophysiology, health psychology, and research...![Mark Lister](https://ipwso.org/wp-content/uploads/2021/02/Mark-Lister-web.png)
Mark Lister
Member of the Advisory Group on “Research on specialist services for people with PWS”. Mark Lister is a Board Certified Assistant Behaviour Analyst who has 30 years of experience working with individuals with Prader-Willi syndrome, designing and managing,...![Elizabeth Fistein](https://ipwso.org/wp-content/uploads/2021/03/Elizabeth-Fistein.png)
Elizabeth Fistein
Elizabeth is a psychiatrist specialising in the interface between law and mental health services. She sits as a medical member of the First Tier Tribunal (Mental Health) for England and works at the University of Cambridge where she teaches and researches in the...![Esther Maina](https://ipwso.org/wp-content/uploads/2021/03/Esther.png)