1. Drug Analysis Department Laboratory of Racing Chemistry Utsunomiya Tochigi Japan
2. Department of Pharmaceutical Sciences Tohoku University Hospital Sendai Miyagi Japan
3. Racing Laboratory The Hong Kong Jockey Club Sha Tin N.T. Hong Kong China
4. Veterinarian Section ∣ Equine Department Japan Racing Association Minato‐ku Tokyo Japan
5. Equine Veterinary Clinic ∣ Horse Racing School Japan Racing Association Shiroi Chiba Japan
6. JRA Equestrian Park Utsunomiya Office Japan Racing Association Utsunomiya Tochigi Japan