1. Bacterial and Parasitic Disease Division, Parasitic and Honeybee Disease Laboratory, Department of Animal and Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea.
2. Unit 15281, Medical Department Activity-Korea/65th Medical Brigade, Force Health Protection and Preventive Medicine, APO, AP 96271-5281, USA.
3. Migratory Bird Research Center, Korea National Park Research Institute, Korea National Park Service, Sinan, Republic of Korea.