Turuvekere Subrahmanya Shanmukha DIKSHITH, PhD, was the head of The Pesticide Toxicology Division, Industrial Toxicology Research Centre, (CSIR), Lucknow, and later director of the Toxicology Research Laboratory, VIMTA Labs Ltd., Hyderabad, India. He is presently the Consultant, Pharmacology Division, Indian Institute for Chemical Technology (CSIR), Hyderabad, India. He is a member of the World Health Organization Task Group on Environmental Health Criteria Documents and the International Program on Chemical Safety. He is also the editor of Toxicology of Pesticides in Animals, and author of Safety Evaluation of Environmental Chemicals.

PRAKASH V. DIWAN, PhD, is the Deputy Director, Pharmacology Division, Indian Institute of Chemical Technology (CSIR), Hyderabad, India. He has been elected as a Fellow of the Andhra Pradesh Academy of Sciences.