1 Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore. Electronic address: dr.arunkumar.orth@gmail.com.
2 Department of Paediatrics, Sree Balaji Medical College and Hospital, Chennai, Tamil Nadu, India.
3 Department of Orthopaedic Surgery, Al-Hekma Specialized Hospital, Assiut, Egypt; Department of Orthopaedic Surgery, Khoo Teck Puat Hospital, Singapore.