Late Dr. G. Rajagopal was Professor and Head, Department of Biochemistry at Rajah Muthiah Medical College, Annamalai University, Annamalainagar, Tamilnadu. He has experience in teaching students of Medicine, Dental Sciencs, Pharmacy, and Nutrition for over four decades. He has done a pioneering work on Ethylene Glycol toxicity in JIPMER, Pondicherry which has earned his Ph.D. degree in Biochemistry. He was also formerly Professor of Biochemistry in Dr. Kamakshi Institute of Medical Sciences & Research and Head of the Laboratory Division in Dr. Kamakshi Memorial Hospital, Chennai. He worked as Visiting Professor of Biochemistry at B.P. Koirala Institute of Health Sciences, Dharan, Nepal three times, and full time professor of Biochemistry at National Medical College, Birganj, Nepal. He has published over 75 research papers. His method of estimation of Citric acid in urine is internationally acclaimed. He has participated in many National and International Scientific Conferences and presented invited lectures and research papers. Prof. Dr. Suprita Gupta (MBBS, MD, FIABMS) is Professor and Head, Department of Biochemistry at National Medical College, Birgunj, Nepal and she has 18 years of teaching experience to undergraduate and postgraduate Medical and Paramedical students. She is Professor of Biochemistry Since last 8 years. Dr. Suprita Gupta was principal of National Medical College, Birgunj for one tenure. She did MBBS from Himalayan Institute of Medical Sciences, Jollygrant, Dehradun, India. She did MD in Biochemistry from B.P. Koirala Institute of Health Sciences, Dharan, Nepal.