Dr. Lim is a Consultant Neurologist and Professor at the University of Malaya, Kuala Lumpur, where he runs a very busy government clinic and private practice seeing many patients (around 70 every week) with Parkinson’s disease (PD) and other Movement Disorders, including complicated cases requiring advanced treatments such as deep brain stimulation. Dr. Lim earned his medical and research doctorate degrees from the University of Melbourne and was admitted to Fellowship of the Royal Australasian College of Physicians after completing advanced training in adult Internal Medicine and Neurology in Melbourne. Dr. Lim trained in general neurology and subspecialized in Parkinson’s & Movement Disorders, at world-renowned centres in Melbourne and Toronto (the latter supported by the Edmond J. Safra Fellowship, under Prof. Anthony Lang). He has published widely in the field of Movement Disorders (Parkinson's as well as a variety of rarer movement disorders), with approx. 150 peer-reviewed journal papers and book chapters, including first-author publications in Lancet Neurology, Archives of Neurology/JAMA Neurology, Movement Disorders, etc. and co-authorship in journals such as Nature Genetics, Nature Reviews Neurology, Annals of Neurology, and Brain (10K+ citations, h-index 45). He is on several Editorial Boards including Parkinsonism & Related Disorders and Neurotorium, and is an Associate Editor for Nature Partner Journal (npj) Parkinson's Disease and Neurology Asia (for several years previously also for Science Advances), and Guest Editor for the Journal of Parkinson's Disease. Dr. Lim is the current Chair of the Asian-Oceanian section of the International Parkinson & Movement Disorder Society (MDS) (which has approx. 3.5K members, from the Clinical and Basic science communities), and serves on several MDS Committees/Task Forces (for Evidence-Based Medicine; Progressive Supranuclear Palsy; Movement Disorders in Asia; Palliative Care; etc.). He is a Steering Committee member, and Co-Lead of the Under-Represented Populations Working Group, of the Global Parkinson's Genetics Program (GP2). He is a holder and/or Reviewer of grants for PD-related funding organisations such as the Michael J. Fox Foundation (MJFF), and the United Kingdom's National Institute for Health and Care Research (NIHR) and Cure Parkinspn's Trust (CPT). With a strong commitment to teaching/training, Dr. Lim has organized numerous teaching courses on Parkinson’s & Movement Disorders, and delivered and/or participated in hundreds of international-level lectures and expert panels throughout Asia-Oceania, North America, and Europe. These have often been under the auspices of the MDS, as MDS Visiting Professor, MDS Ambassador, or MDS Virtual Professor. As a versatile speaker with broad-ranging expertise, he has been invited to give numerous Plenary Lectures, including at the flagship MDS Annual Congress (Toronto 2011, Dublin 2012, Nice 2019, Philadelphia/Virtual 2020, Copenhagen 2023, Honolulu 2025) and at the World Parkinson's Congress (Kyoto 2019). In 2025, together with Profs. Nobutaka Hattori and Pramod Pal, he Chaired a highly successful 9th Asian & Oceanian Parkinson's & Movement Disorders Congress (AOPMC) in Tokyo. He has provided movement disorder fellowship/observership training to neurologists from multiple underserved countries, including Indonesia, Myanmar, Bangladesh, Kyrgyzstan, Uzbekistan, Pakistan, India, the Philippines, and Nigeria, often under the auspices of the MDS (Visiting Trainee Grants or Centre-to-Centre Programs). Dr. Lim is a Medical Advisor to the Malaysian Parkinson’s Disease Association, and a founding member (and Immediate-Past Chair) of the Malaysian Movement Disorder Council. He was elected as a Fellow of the Malaysian Academy of Sciences in 2017. In recognition of his leadership in the Movement Disorders field, he was invited to be an Expert Panelist/Consultant to the World Health Organization (WHO) in 2020 to address global policy, implementation and research related to PD. Dr. Lim's research interests are multi-dimensional, with a focus on the following areas: (i) PD (particularly genetics and genotype-phenotype correlations; evidence-based medicine/clinical trials; non-motor features including gastrointestinal aspects; comorbidities; patient-centred care; and rating scales/disease staging); (ii) Parkinson-plus syndromes and other miscellaneous/"orphan" movement disorders, including progressive supranuclear palsy (PSP).

Prof Ir Dr Ab Halim Abu Bakar received the B.Sc. degree in Electrical Engineering from the University of Southampton, United Kingdom in 1976, M.Eng. and Ph.D. degrees from the University of Technology, Malaysia in 1996 and 2003 respectively. He spent 30 years of industrial experience with Tenaga Nasional Berhad (TNB) before joining University of Malaya. Prof Ir Dr Halim is a Fellow of the Institute of Engineers Malaysia, Member of IEEE, Cigre, Chartered Engineer (UK) and P.Eng (Malaysia). Currently he is a professor with the UM Power Dedicated Advanced Centre (UMPEDAC), University of Malaya, Malaysia. He is an established academician and a practical engineer. He has to-date published 97 ISI and 151 Scopus papers in  journals and 47 papers in proceedings  internationally. He  has successfully  supervised to completion 15 PhD, 5 master by research (M.Eng.Sc), 1 master of pilosophy (M.Phil) and 50 Masters by course work project (M.Eng) and has Web of Science H index of 38 and  Scopus H index of 37. He is also involved  as a reviewer for iternational journal such as IEEE Transactions Power Delivery, IEEE Transactions Power Systems, IEEE Smart Grid,IET  Generation,Transmssion and Distribution  IJEPES (Elsevier)  and several  international confereces. Prof Ir Dr Halim  won several excellent awards during his professoinal and academic carrier. In 2008 he won IEEE PES Malaysian Chapter Outstanding Engineering Award.His research interest include power system protection and power system transients.

He obtained B.Sc. Hons in 1973 and Ph.D. in 1976 from UM.  He went on a French Scholarship in 1976. He returned to UM as a Lecturer In 1978. He was promoted to Associate Professor in 1986 and Professor in 1999.   During sabbatical leaves, he had been to the Tokyo Institute of Technology (1983),  the PennState University, USA (1989). He was a visiting professor to the Tokyo University of Agriculture and Technology in 1990, and to the King Mongkut’s Institute of Technology, Thailand in April and the University of Sidney in July 1997. He has written 3 textbooks, and published more than 133 journal papers. He had supervised and produced 21 Ph.Ds. and 38 M.Sc. He has filed 25 patents and has served as consultant to many local and foreign companies.