Stephen has developed an international reputation in endometriosis. His interests in the disorder include genetic epidemiology, health services research, development of new diagnostic tests, and clinical drug trials. Stephen has a role as a medical advisor to areas of the pharmaceutical industry and is actively involved in preparing national and international guidelines on the investigation and treatment of endometriosis, whilst also supporting patient self-help groups in both the UK and US. Stephen is a trustee of the World Endometriosis Research Foundation, and he has acted as an advisor to a number of pharmaceutical companies.
Stephen provided his expertise in the design, testing and validation of the Oxford Endometriosis Health Profile PRO (EHP-30), the first disease specific, patient generated quality of life PRO in endometriosis.
