1. Department of Global Health Entrepreneurship, Tokyo Medical and Dental University , 1-5-45 Yushima, Bunkyo City, Tokyo 113-8510 , Japan
2. College of Health Sciences, The University of Dodoma , P.O. Box 395, Dodoma , United Republic of Tanzania
3. The Ifakara Health Institute , Kiko Avenue, Dar es Salaam , United Republic of Tanzania
4. Department of Internal Medicine, Muhimbili University of Health and Allied Sciences , P.O. Box 65001, Dar-es-Salaam , United Republic of Tanzania
5. Department of Health Sciences, Nagasaki University Graduate School of Biomedical Sciences , 1-7-1 Sakamoto, Nagasaki 852 - 8520 , Japan