1. Department of Biology, Faculty of Science and Education, Busitema University, Tororo P.O. Box 236, Uganda
2. Cherry Hill East High School, 1750 Kresson Rd, Cherry Hill, NJ 08003, USA
3. George C. Marshall High School, Fairfax County Public Schools, 7731 Leesburg Pike, Falls Church, VA 22043, USA
4. Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA