ACKNOWLEDGMENTS
We are grateful to the staff of the subjected primary schools
in South Dagon, Hlaing Thayar, and North Dagon, Myanmar
for their assistance in guidance of the schoolchildren and preparing
anal swabs. We also thank the staff of National Health
Laboratory, Myanmar and the staff of Korea Association of
Health Promotion, Korea who helped this survey. This study
was supported by a grant from Seoul National University Hospital
(2015).