A comparative study of the effects of different bioactive fillers in PLGA matrix composites and their suitability as bone substitute materials: a thermo-mechanical and in vitro investigation - Simpson, RL; Nazhat, SN; Blaker, JJ; Bismarck, A; Hill, R; Boccaccini, AR; Hansen, UN; Amis, AA (Journal of The Mechanical Behavior of Biomedical Materials, 2015)