CONFERENCE ANNOUNCEMENT WEST AFRICAN SOCIETY OF TOXICOLOGY (WASOT) IN COLLABORATION WITH LAGOS STATE UNIVERSITY COLLEGE OF MEDICINE (LASUCOM) ANNOUNCES ITS 9TH INTERNATIONAL CONFERENCE KEYNOTE SPEAKERS:  Jerome Nriagu, PhD, DSc (Emeritus Professor, Environmental Health Sciences, School of Public Health, University of Michigan)  TITLE:           SLEEP, ECOSYSTEM SERVICES AND HUMAN HEALTH (SLEEP- ENVIRONMENTAL CHANGE-HUMAN HEALTH RELATIONSHIPS) Orish Ebere