[1] Nippon Vet & Life Sci Univ, Vet Med Teaching Hosp, Tokyo, Japan
[2] Kyoto Anim Referral Med Ctr, Kyoto, Japan
[3] YPC Tokyo Anim Orthoped Surg Hosp, Tokyo, Japan
[4] Nippon Vet & Life Sci Univ, Lab Vet Surg, Tokyo, Japan
[5] Nippon Vet & Life Sci Univ, Lab Vet Radiol, 1-7-1 Kyounan Cho, Musashino, Tokyo 1808602, Japan