TY - RPRT TI - Ectopic bone formation associated with recombinant human bone morphogenetic proteins-2 using absorbable collagen sponge and beta tricalcium phosphate as carriers. AU - Chang-Sung Kim AU - Joon-Il Kim AU - Jin Kim AU - Seong-Ho Choi AU - Jung-Kiu Chai AU - Chong-Kwan Kim AU - Kyoo-Sung Cho PY - 2005 DO - 10.1016/j.biomaterials.2004.07.015 UR - https://pubmed.ncbi.nlm.nih.gov/15585252/ ID - 15585252 ER -