William Robert Sears, M.D.(Sydney Neurospine Clinic, Australia)
Daniel H.Kim M.D., (Stanford University Medical Center, USA)
Noel l. Perin, M.D. (Roosevelt Hospital Center, USA)
Allan D.O. Levi, M.D, PhD. (Univ. of Miami, USA)
Howard S. An, M.D.(Luke's Medcal Center, USA)
Hiroshi Nakagawa, M.D. (Aichi Medical Univ., Japan)
Charles L. Branch Jr., M.D. (Univ. of North Carolina, USA)
Keisuke Takahashi, M.D. (Saitama Medical School, Japan)