Formerly Queen Mary Hospital's Consultant Paediatrician, Dr Marco Ho had served in the public sector for over 24 years. During his 12 years as the lead clinician in allergy & Immunology, he was honoured with the Queen Mary Hospital Outstanding Staff Award for his clinical excellence in diagnosing and treating various rare and complex immunological disorders. His appointments in the public sector included Service Director of Quality & Safety, Hong Kong West Cluster, Hospital Authority and Deputy Hospital Chief Executive, Queen Mary Hospital. Dr Ho is an Honorary Clinical Associate Professor at the University of Hong Kong.

Dr Ho studied medicine at the University of Hong Kong and graduated in 1994. He completed his training in Paediatrics in 2001 and his training in Allergy & Clinical Immunology in 2003. He was a  research fellow in food allergy at the Royal Children's Hospital in Melbourne 2005-2006. Dor Ho holds fellowship of the Royal Colleges of the United Kingdom, American College of Allergy, Asthma and Immunology, and Australasian Society of Clinical Immunology and Allergy. Dr Ho's Doctor of Medicine (MD) thesis, titled "Clinical Care of Food Allergy/Anaphylaxis in Children", has earned him the Sir Patrick Manson Gold Medal. Dr Ho inaugurated the Allergy Immunotherapy Clinic in Queen Mary Hospital, the first of its kind in Hong Kong. Dr Ho was among the first doctors registered as specialists in Paediatric Immunology & Infectious Diseases at The Medical Council of Hong Kong in 2012.

Dr Ho is a founding member of the council of Hong Kong Society for Paediatric Immunology Allergy & Infectious Diseases, having served as Honorary Secretary 2010 - 2014 and as Vice President 2014 - 2018. He was elected President of Hong Kong Institute of Allergy 2017 -2019,  a professional organization of the Asia-Pacific region for promoting training, education and research in allergy and related disciplines. Dr Ho is one of the Founders, past-Chairman and Advisor of The Hong Kong Allergy Association, a charitable  patient support organization founded in 2008. Dr Ho is also an Advisor to The Hong Kong Asthma Society. Dr Ho published a series of books, written in Chinese, educating the public on proper community allergy care, and was bestowed in 2011 Faculty Award for Knowledge Exchange of The University of Hong Kong.

Dr C M Chu is currently Honorary Consultant Physician of the Department of Medicine & Geriatrics, United Christian Hospital, Hong Kong, Honorary Associate Professor of the University of Hong Kong (Department of Microbiology) and Adjunct Clinical Associate  Professor of the Chinese University of Hong Kong (Department of Medicine & Therapeutics). He was also Examiner of the Royal College of Physicians (UK).

He was formerly Chief  of Service (2009 - 2011) and Consultant Physician (2007 - 2019) of the Department of the Medicine & Geriatrics, United Christian Hospital, Hong Kong and Visiting Consultant of St. Thomas Hospital (Lane Fox Respiratory Unit), London, United Kingdom (2013). He was also formerly President (2007 - 2009) and Governor (2009 - 2013) of the American College of Chest Physicians (Hong Kong & Macau Chapter).

Dr Chu's primary research  interests are in chronic obstructive pulmonary disease (COPD), non-invasive ventilation (NIV), home ventilation and emerging respiratory infections. He led the fight against severe acute respiratory syndrome (SARS) in United Christian Hospital in 2003. He represented the World Health Organization (WHO) and the HKSAR government to visit Thailand and Vietnam when Avian Influenza appeared in these countries in 2013.

Dr Chu is one of the leaders actively involved in the research and clinical applications of non-invasive ventilation, and is frequently invited to give lecture on NIV in the Asia-Pacific and Greater China region. He led the Respiratory Working Group of Hospital Authority in the management and weaning of ventilator patients in Medical Departments in HA hospitals. He is the author of book chapters and editor of international journal of the topic of NIV.

Dr Chu has also introduced electromagnetic  navigation  bronchoscopy (ENB) to Hong Kong and pioneered its use. He has trained a generation of bronchoscopists in Hong Kong, Japan, Korea, Singapore, Taiwan, Malaysia and Thailand in the use of ENB and related technologies. He is one of the authors of an Asian consensus guideline in managing solitary pulmonary nodule. He is frequently invited to give lectures and workshops on ENB in the Asia-Pacific Region.

Dr Chu has published more than 70 scientific papers, book chapters and thesis on various aspects of respiratory medicine. He as awarded a Medal of Honour by the Hong Kong Government in 2004 for his work. He was also awarded the prestigious Sir Patrick Manson Gold Medal for his MD thesis on SARS by the University of Hong Kong in 2005.

Dr Lui is a specialist in Psychiatry. He graduated with a MBBS from the University of Hong Kong. He also holds a Bachelor's degree of Laws at the University of London and Master's degree of Health and Hospital Management at the University of Birmingham. He is a Member of the Royal College of Psychiatrists, a Fellow of the Hong Kong College of Psychiatrists and Fellow of the Hong Kong Academy of Medicine (Psychiatry). He is Honorary Clinical Assistant Professor in the Department of Psychiatry, the Chinese University of Hong Kong. He had been trainer of the Hong Kong College of Psychiatrists since 2007.

Dr Lui's research interests focused  on mental capacity assessment. He translated and validated two structured assessment tools  on mental capacity for Chinese older population in Hong Kong, namely the MacArthur Competence Assessment Tool - Treatment (MacCAT-T) and the Assessment of Everyday Decision Making (ACED). He supervised the development of a new mental capacity structured assessment instrument, called Capacity Assessment to Sign and Enduring Power of Attorney (CASEPA). In 2014,  he reviewed the principle of assessing mental capacity for enduring power of attorney in Hong Kong and published the paper in the Hong Kong Medial Journal.

Dr Lui is actively engaged in the community service and public education. He was a former member of the Hong Kong Guardianship Board. He has served as member or advisor in various Government committees and Non-governmental Organizations. He was invited speaker on mental health issues in many local and international conferences.