1. Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Dublin 2, Ireland;
2. Trinity Centre for Bioengineering, Trinity College Dublin, Dublin 2, Ireland;
3. Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, Dublin 2, Ireland;
4. Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI and TCD, Dublin 2, Ireland
5. Advanced Materials and Bioengineering Research (AMBER) Centre, RCSI and TCD, Dublin 2, Ireland e-mail:
6. Office of the President and Provost, Trinity College Dublin, Dublin 2, Ireland