1. Marieb EN (1998) In: Human anatomy & physiology, 4th edn. Benjamin/Cummings Science Publishing, Menlo Park, California
2. Tortora GJ (1989) In: Principles of human anatomy, 5th edn. Harper & Row Publishers, New York
3. Boyle WJ, Simonet WS, Lacey DL (2003) Nature 423:337
4. Von Recum AF (1998) In: Handbook of biomaterials evaluation. CRC Publisher
5. Ramakrishna S, Mayer J, Wintermantel E, Leong WK (2001) Comp Sci Tech 61:1189