1. Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, Singapore 119228;
2. University Orthopaedics, Hand and Reconstructive Microsurgery Cluster, National University Health System, Singapore, and Department of Orthopaedic Surgery, Otto Von Guericke University, Magdeburg, Germany
3. University Orthopaedics, Hand and Reconstructive Microsurgery Cluster, National University Health System, Singapore