Bioceramics : proceedings of the 16th International Symposium on Ceramics in Medicine, the annual meeting of the International Society for Ceramics in Medicine : Bioceramics-16, Centro de Congressos da Alfȃndega do Porto, Porto, Portugal, 6-9 November, 2003 - International Symposium on Ceramics in Medicine; Interntaional Society for Ceramics in Medicine (Key engineering materials, 2004)