1. School of Materials and Mineral Resources Engineering; Universiti Sains Malaysia Engineering Campus; 14300 Nibong Tebal Penang Malaysia
2. Department of Biomaterials; Kyushu University; Fukuoka Nishi Ward Japan
3. Faculty of Manufacturing Engineering; Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya; 76100n Durian Tunggal Malacca Malaysia