| Dark Matters | 2010- | International editorial board member | | |
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| Data Monitoring Committee Member for Pfizer's Phase III Asian Only Study in NSCLC | 08/2011 till date | Committee Member | | | 06/2012 till date | Chairman | | |
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| davidclovers | |
| Debate & Language Education Association | 09/2007-NOW | Chairman | | Mr Liu Liu Shun Hei |
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| Decision Support and Business Intelligence Systems (10th Global Edition), Sharda and Turban, Pearson | 2013 - 2013 | Reviewer | | Dr Lok Lok Chun Kit |
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| Declaration of Istanbul Custodian Group | |
| Deep Brain Stimulation Society, France. | |
| Deep Ocean Stewardship Initiative, Climate Change | |
| Deep-Sea Biology Society | |
| Deloitte Touche Tohmatsu | 01/2013-12/2014 | INED Exclusive Membership | | |
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| Democratization | Spring 2013 | Anonymous peer reviewer of academic article. | | |
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| Dental Alumni Association, The Universety of Hong Kong | 02/2018 - present | Councillor | | | 02/2017 - 02/2018 | Immediate Past President | | |
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| Dental Alumni Association, the University of Hong Kong | 07/2011 - 02/2017 | President | | |
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| Dental Ancillary Staff Association, PPDH | 16 Mar 2014 - 15 Mar 2015 | Secretary | | Ms Chan Chan Tsz Mei Rowena |
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| Dental Association of Thailand, Thailand | 1990 - present | Member | | Dr Itthagarun Itthagarun Anut |
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| Dental Council of Hong Kong | 1999 - present | Member of the Board of Examiners for the Licensing Examination | | | 1999 – present | Chief Examiner in Prosthetic Dentistry, | | | 2005 - present | Expert Adviser to the Preliminary Investigations Committee | | | 08/2015- | Member - Ad Hoc Expert Panel, Question Bank + Examination Policy | | | 09/2017 - present | Member of Examination Committee | | |
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| Dental Council of Hong Kong - CME Accreditation Committee | |
| Dental Materials Group / IADR | |
| Dental Society, HKUSU | 11/2009 - Present | Honorary President | | |
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| Dental Young Fellow Chapter Committee, The College of Dental Surgeons of Hong Kong | 01/2021-01/2023 | Vice-chairlady & Committee Member | | Dr Cheung Cheung Amelia Wan Tin |
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