Artificial cervical disc prosthesis and zero-profile interbody fixation and fusion system for cervical disease: 2-year follow-up 
Dong Zhen-yu, Chu Ge, Huang Yi-fei, Yuan Feng-yun
Chinese Journal of Tissue Engineering Research . 2015, (22): 3503 -3507 .  DOI: 10.3969/j.issn.2095-4344.2015.22.012