Effect of multi-ions doping on the properties of carbonated hydroxyapatite bioceramic by Safarzadeh, Marjan, Ramesh, Singh, Tan, Chou Yong, Chandran, Hari, Noor, Ahmad Fauzi Mohd, Krishnasamy, Sivakumar, Alengaram, Ubagaram Johnson, Ramesh, Subramaniam