Security and biocompatibility of injectable absorbable poly amino acid/calcium sulfate composites in vivo  
Zou Chang1, Zhang Shuai1, Duan Hong1, Min Li1, Zhou Yong1, Tu Chong-qi1, Yan Yong-gang2, Pei Fu-xing1
Chinese Journal of Tissue Engineering Research . 2012, (8): 1391 -1395 .  DOI: 10.3969/j.issn.1673-8225.2012.08.014