| Company | Timeline | Status | |
| Lifting The Burden Director • Physician | 24 Jun 2009←16 Years→Current | Active | |
World Headache Alliance Director • Physician | 1 Jul 2007←2 Years 2 Months→11 Sep 2009 | Dissolved | |
The Association Of Research Ethics Committees Director • Physician | 21 Mar 2002←2 Years 7 Months→12 Nov 2004 | Dissolved | |
| European Headache Federation Director • Physician | 14 Dec 2000←3 Years→19 Jun 2004 | Dissolved | |
| The British Association For The Study Of Headache Director • Consultant Physician | 2 Nov 1998←4 Years→21 Nov 2002 | Active | |
World Headache Alliance Director • Physcian | 12 Nov 1997←9 Years→28 Jun 2007 | Dissolved | |
| International Headache Society Director • Medical Practitioner | 9 Nov 1994←13 Years→6 Sep 2008 | Active | |
