LI Yun-qing (1961-), male, Ph.D., professor of Department of Anatomy and K. K. Leung Brain Research Centre, the Fourth Military Medical University; research field: neuroanatomy. QIU Jian-hua (1959-), male, Ph.D., professor of Department of Otorlaryngology, Xijing Hospital, the Fourth Military Medical University; research fields: inner ear disease and stem cell.