Data Collection from Study Participants (IMAGE) University of Pennsylvania Caption André Essiane and Eric Ngwang, members of the field research team, record patient health, informed consent, and ethnography information for study participants in southern Cameroon. Credit Courtesy of the Tishkoff laboratory Usage Restrictions In context of reporting License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.