Hydrogel-based delivery of rhBMP-2 improves healing of large bone defects compared with autograft - Krishnan, L; Priddy, L B; Esancy, C; Li, M T; Stevens, H Y; Jiang, X; Tran, L; Rowe, D W; Guldberg, R E (Clin Orthop Relat Res, 2015)