A systematic review of osteogenesis induced by recombinant human bone morphogenetic protein-2/absorbable collagen sponge for maxillary sinus floor augmentation
Ning Jing, Liu Ya-li, Yang Ke-hu, Wang Lin, Ma Peng, Liu Bin
Chinese Journal of Tissue Engineering Research . 2011, (9): 1603 -1606 .  DOI: 10.3969/j.issn.1673-8225.2011.09.020