| HA Board, Hospital Authority | 04/2001 - 03/2007 | Member | | Professor Lam Lam Shiu Kum |
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| HA Centre for Health Protection | 07/2017 | Working group on "Infection Control Guidelines on Nephrology Services in Hong Kong" | | |
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| HA COC (A&E) Training and workforce subcommittee | 07/2012 - 06/2017 | Chairperson | | |
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| HA EASY Steering Committee: Evaluation sub-committee | 01/2012 till now | Convenor the the sub-committee | | |
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| HA- Working group of Autistic Spectrum Disorders (ASD) | |
| HAAL | 9/2009 - 2014 | member | | Dr Martyn Martyn Elaine Ruth | | member | | | 10/2010- 10/2012 | President | | | 10/2012- | treasurer | | | 1991-2015 | Member | | | 09/2006 - | Member | | | 03/2017-current | Member | | Ms Taylor Taylor Rebecca Jean |
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| HAAL (Hong Kong Association for Applied Linguistics) | 12/2003 - 2009 | Member | | | 09/2017 - current | Member | | Mrs Chiba Mereu Chiba Mereu Akiko |
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| HAAL (Hong Kong Association of Applied Linguistics) | |
| Hagiography Society | 1/2002 to present | member | | | 08/2019-current | Member | | |
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| HAHO EASY task group on Clinical practice guidelines for schizophrenia | |
| HAHO/HKWC Smoking Cessation Steering Committee | 2009 - 2011 | Cluster Coordinator | | |
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| Hainan International Arbitration Court | 04/2019 - Present | Arbitrator | | |
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| Hainan Medical University, China 2014 July - 2017 June | 07/2014 - 06/2017 | Visiting Professor | | |
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| Hakluyt Society | |
| Han-hsueh yen-chiu (Chinese Studies), Taipei | 2004-2008 | Member of the Editorial Board | | |
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| Hand-in-Hand Cancer Foundation | |
| Hand-in-Hand Capable Theatre | 09/2014 - present | Consultant | | |
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| Hanen | 05/2016-present | trained member | | |
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| Hang Lung Young Architects Program | |
| Hang Seng Management College | 04/2014-08/2016 | External Examiner | | |
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