| Galimedix Therapeutics (Kensington, MD, USA) | |
| Gastro-enterological Society of Australia | |
| Gastro-enterological Society of Hong Kong | |
| Gastroenterological Society of Australia | 06/2014-06/2016 | Member | | Dr Wong Wong Yik Chun |
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| GDC | 2005-current | Specialist Reg. | | |
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| GEC ESTRO gynecology working group | November 2017 to present | Member | | |
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| Gender and Education Standing Committee of the Comparative and International Education Society | |
| "Gender and Education" Standing Committee/ Comparative and International Education Society | |
| Gender Research Centre, The Chinese University of Hong Kong | |
| Gene | |
| Gene Reviews | |
| Gene Therapy | |
| General Dental Council UK | 07/2010 - 07/2011 | Registration | | | 07/2011 - 07/2012 | Registration | | | 07/2012 - 07/2013 | Registration | | |
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| General Hospital Psychiatry | |
| General Medical Council (GMC), United Kingdom | |
| General Medical Council UK | since 1994 | Full Registration Member | | |
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| General Medical Council, UK | 07/1996 - present date | member | | |
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| General Medicine Quarterly Update working group, Hong Kong Academy of Medicine | 1/2024- | Member | | Dr Hui Hui Wan Hin Rex |
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| General Motors Cancer Research Foundation | |
| General Pharmaceutical Council | 10/2010- present | member | | | 01/2010 - Present | Founding Member | | Ms Chan Chan Wing Lam Phoebe |
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