| Xiamen Science & Technology Bureau | 02/2024 new role (TBC) | Science Consultant (unremunerated) | | |
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| Xian Jiao Tong University, School of Mechanical Engineering | since 1999 | Adjunct Professor | | |
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| XIV Biennial Meeting of The Society For Free Radical Research International | 3/2008-10/2008 | memeber of local organizing committee | | |
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| YaAn Fourth People's Hospital, Sichuan, China | |
| Yale Arab Alumni Association | 10/2012 - 10/2017 | Board Member | | Ms Biedermann Biedermann Stephanie |
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| Yale Journal of Law and Humanities | 03/2016 - 06/2017 | Member, Editorial Board | | |
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| Yale Law School Information Society Project | 11/2006-present | Fellow | | Dr Xue Xue Hong |
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| Yanayacu Natural History Research Group | |
| Yingkou Meteorological Bureau, Liaoning Province, China | August 2018-present | Scientific Adviser | | |
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| YMCA Global Citizenship Competition (2021-22) | |
| Young Academy of Sciences Hong Kong | 2018 - present | Founding Member | | |
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| Young Academy Science of Hong Kong | 09/2019-Present | Elected Member | | |
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| Young Fellow Chapter, The Hong Kong Academy of Medicine | 2018 - 2020 | Member | | | 7/2021-7/2023 | Member | | |
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| Young Fellow Chapter, The Hong Kong College of Otorhinolaryngologists | |
| Young Fellow Committee | |
| Young Fellow Committee of Hong Kong College of Psychiatrists | |
| Young Fellow's Committee, Hong Kong College of Physicians | 06/2020- | Member | | Dr Hui Hui Wan Hin Rex |
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| Young Fellows Chapter, The Hong Kong Academy of Medicine | 06/2022-present | Committee Member | | Dr Cheung Cheung Amelia Wan Tin |
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| Young Oral and Maxillofacial Surgeon Group | 2013-present | Vice President | | |
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| Young Oral and Maxillofacial Surgons of Hong Kong | |
