Dr. Hari Singh holds an MBBS and an MD in Community Health Administration from Delhi University. He has extensive experience in managing public health projects pertaining to maternal health, child health, adolescent health, family planning, HIV/AIDS, and tuberculosis. Additionally, he has provided technical assistance to several state governments in India to improve the quality of services in public health institutions. He has also been involved in evaluating numerous national health programs and has worked with international funding agencies such as USAID and Danida. Currently, Dr. Singh serves as dean of the School of Public Health at SRM Institute of Science and Technology in Chennai, India, where he teaches public health. He is passionate about developing technical content in a simple language to ensure his readers can easily understand complex medical and health topics.