1. Department of Orthopaedic Surgery; Faculty of Medicine; Siriraj Hospital; Mahidol University; 2 Wanglang Rd Bangkoknoi Bangkok 10700 Thailand
2. Division of Hematology; Department of Medicine; Faculty of Medicine; Siriraj Hospital; Mahidol University; 2 Wanglang Rd Bangkoknoi Bangkok 10700 Thailand
3. Department of Clinical Pathology; Faculty of Medicine; Siriraj Hospital; Mahidol University; 2 Wanglang Rd Bangkoknoi Bangkok 10700 Thailand