In vivo biomechanical properties of biodegradable polylactic acid-glycolic acid lumbar intertransverse fusion cage  
Yao Bao, Li Kai-nan, Nie Hai
Chinese Journal of Tissue Engineering Research . 2014, (52): 8426 -8432 .  DOI: 10.3969/j.issn.2095-4344.2014.52.012