[1] Peking Univ, Hosp 3, Pain Med Ctr, Beijing 100191, Peoples R China
[2] Peking Univ, Dept Orthoped, Hosp 3, Beijing 100191, Peoples R China
[3] Beijing Friendship Hosp, Dept Orthoped, Beijing 100052, Peoples R China
[4] Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, State Key Lab Virtual Real Technol & Syst, Beijing 100191, Peoples R China
[5] Beijing Normal Univ, Smart Learning Inst, Beijing 100875, Peoples R China