About the Authors
Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
Maharat Nakhon Ratchasima Hospital, Nakhon Ratchasima Province, Thailand
Chumphon Hospital, Chumphon Province, Thailand
Udon Thani Hospital, Udon Thani Province, Thailand
Banmai Chaiyapod Hospital, Burirum Province, Thailand
The National Institute of Animal Health, Ministry of Agriculture and Cooperative, Bangkok, Thailand
The authors have declared that no competing interests exist.
Conceived and designed the experiments: YS CS SH KP KL DS SS WC ND. Analyzed the data: YS WP YL. Wrote the paper: YS WP YL.