R318Combination application of human amniotic mesenchymal cells and poly (L-lactic acid)/ hydroxyapatite membranes for construction of cells/scaffold complexes in bone tissue engineering 
Zhong Jin-sheng1, Mei Fang2, Qi Wei-hong3, Yang Xiao-ping4
Chinese Journal of Tissue Engineering Research . 2012, (8): 1345 -1348 .  DOI: 10.3969/j.issn.1673-8225.2012.08.004