About the Authors
Department of Public Health and Epidemiology, Swiss Tropical Institute, Basel, Switzerland,
National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
Helminthiasis Division, Yunnan Institute of Parasitic Diseases, Simao, People's Republic of China
Medical and Diagnostic Services, Swiss Tropical Institute, Basel, Switzerland
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JU PS XZ. Performed the experiments: PS ZD JJ LW XW LL HM. Analyzed the data: PS. Wrote the paper: JU PS XZ HM. Supervised the first author in all aspects of the work: JU.