Rathna Devi Vaithilingam graduated with a Bachelor of Dental Surgery and Masters in Clinical Dentistry (Periodontology) from the University of Malaya. She previously worked in the Ministry of Health as a consultant periodontist before joining University Malaya as a  Senior Lecturer in 2008. She is currently a Professor in the field of Periodontology in the Faculty of Dentistry. She has been a principal investigator in various research projects pertaining to periodontal-systemic relationship, genetic studies associated with periodontal disease and periodontal regenerative therapy. Her research output has been published in various peer- reviewed international and local publications. She has presented internationally and locally on her area of expertise. She was previously the President of Malaysian Society for Oral Microbiologists and Oral Immunologists and President of the Malaysian Society of Periodontology. She is also a member of various national and international professional bodies. She is an Editorial Board member of the Annals of Dentistry University Malaya and previously the Journal of International Academy of Periodontology.          

Umi Kalsum Zolkafli @ Zulkifly  holds the Bachelor of Quantity Surveying from Universiti Teknologi Mara. She attained her Master of Science in Construction Contract Management from Universiti Teknologi Malaysia in the year 2008.  She completed her Doctoral degree in Built Environment from Universiti Teknologi Mara in the year 2017 and is now persuading her research interest in construction contract management and professional practice in built environment areas.  She worked with the industry for 10 years prior joining Universiti Malaya, as a Quantity Surveyor and Management Representatives at ARR QS Consultancy. Ever since joining UM as a Lecturer in 10th October 2008, Umi Kalsum Zolkafli @ Zulkifly received the certificate of Excellent Service by UM in the year 2012.  She has produced 2 Master graduates and currently supervising 5 PhDs.  She currently holds 26 publications including books, ISI-ranked articles, Scopus-indexed articles, chapters in book, as well as, in refereed international and national journals. She also has presented papers in conferences locally and internationally.   In addition, she also won Gold, Silver and Bronze awards for her innovation through research and development in multiple national competitions. One of her innovations through community reserach project had also received Intellectual Properties Copyrights. In terms of research grant, Umi Kalsum Zolkafli  has received  in total of RM 2,462,813.66 as principal investigator and co-researcher. She is also a reviewer for multiple international journals and conference proceedings. She is also actively involved with Board of Quantity Surveyors of Malaysia (BQSM) and Royal Institution of Chartered Surveyors Malaysia (RISM) as organizing committee for several international conferences, seminars and workshop Umi Kalsum Zolkafli @ Zulkifly registered as Consultant Quantity Surveyors (CQS) under the Board of Surveyors Malaysia  and a Fellow of The Royal Institution of Surveyors Malaysia (FRISM). She has served as a main committee of Quantity Surveying Division, RISM for more than 5 years.  In addition, she has contributed her expertise in accreditation of Degree programme for public and private Universities under Board of Surveyors Malaysia. She also one of the assessor for the Diploma accreditation programe with Royal Instituitions of Surveyors Malaysia

Senior Lecturer Department of Fiqh-Usul and Science Applied Academy of Islamic StudiesUniversity of Malaya +603-79676011 zafran@um.edu.my   € Google Scholar : https://scholar.google.com/citations?hl=en&view_op=list_works&alert_preview_top_rm=2&gml... € Orcid : https://orcid.org/0000-0003-4693-1890