1. Laboratory of Veterinary Theriogenology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
2. Veterinary Pharmaceutical Management Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea
3. Department of Biomaterials Science, College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea