[1] University of the Ryukyus,School of Health Sciences, Faculty of Medicine
[2] Savannakhet Provincial Health Department,Department of Global Health, Graduate School of Health Sciences
[3] University of the Ryukyus,Department of Public Health, Graduate School of Medicine
[4] Asia Health and Education Fund,Lao Tropical and Public Health Institute
[5] Nagasaki University School of Tropical Medicine and Global Health,undefined
[6] Osaka University,undefined
[7] Ministry of Health,undefined